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MicrosoftKB5009545

HistoryJan 11, 2022 - 8:00 a.m.

January 11, 2022—KB5009545 (OS Build 18363.2037)

2022-01-1108:00:00

Microsoft

support.microsoft.com

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

AI Score

Confidence

High

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

0.032 Low

EPSS

Percentile

91.1%

JSON

January 11, 2022—KB5009545 (OS Build 18363.2037)

EXPIRATION NOTICEAs of 9/12/2023, KB5009545 is only available from Windows Update. This update is no longer available from the Microsoft Update Catalog, or other release channels. We recommend that you update your devices to the latest security quality update.

11/19/20
For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. For an overview of Windows 10, version 1909, see its update history page.NoteFollow @WindowsUpdate to find out when new content is published to the Windows release health dashboard.

Highlights

Updates security for your Windows operating system.

Improvements

This security update includes quality improvements. Key changes include:

Addresses an issue that causes Windows to go into BitLocker recovery after a servicing update.
Enables credentials for Azure Active Directory (Azure AD) Active Directory Federation Services (ADFS) users in Quick Assist.
Addresses an issue that sometimes prevents Quick Assist users from using full screen view after they start a remote assistance session.
If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device. For more information about security vulnerabilities, please refer to the new Security Update Guide website and the January 2022 Security Updates.

Windows 10 servicing stack update - 18363.1912

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.

Known issues in this update

Symptom	Workaround
After installing this update, IP Security (IPSEC) connections that contain a Vendor ID might fail. VPN connections using Layer 2 Tunneling Protocol (L2TP) or IP security Internet Key Exchange (IPSEC IKE) might also be affected.	This issue is resolved in KB5010792.
After installing the Windows updates released January 11, 2022 or later Windows versions on an affected version of Windows, recovery discs (CD or DVD) created by using the Backup and Restore (Windows 7) app in Control Panel might be unable to start.Recovery discs that were created by using the Backup and Restore (Windows 7) app on devices which have installed Windows updates released before January 11, 2022 are not affected by this issue and should start as expected.NoteNo third-party backup or recovery apps are currently known to be affected by this issue	This issue is addressed in KB5013945.

Symptom

Workaround

After installing this update, IP Security (IPSEC) connections that contain a Vendor ID might fail. VPN connections using Layer 2 Tunneling Protocol (L2TP) or IP security Internet Key Exchange (IPSEC IKE) might also be affected.

This issue is resolved in KB5010792.

After installing the Windows updates released January 11, 2022 or later Windows versions on an affected version of Windows, recovery discs (CD or DVD) created by using the Backup and Restore (Windows 7) app in Control Panel might be unable to start.Recovery discs that were created by using the Backup and Restore (Windows 7) app on devices which have installed Windows updates released before January 11, 2022 are not affected by this issue and should start as expected.NoteNo third-party backup or recovery apps are currently known to be affected by this issue

This issue is addressed in KB5013945.

How to get this update

Before installing this updateMicrosoft 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 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
Windows Update and Microsoft Update	Yes	None. This update will be downloaded and installed automatically from Windows Update.
Windows Update for Business	No	No longer available.
Microsoft Update Catalog	No	No longer available.
Windows Server Update Services (WSUS)	No	No longer available.

If you want to remove the LCUTo remove the LCU after installing the combined SSU and LCU package, use the DISM/Remove-Package 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 (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.

File informationFor a list of the files that are provided in this update, download the file information for cumulative update 5009545. For a list of the files that are provided in the servicing stack update, download the file information for the SSU - version 18363.1912.