June 9, 2026—KB5094042 (Monthly Rollup)

June 9, 2026—KB5094042 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012. For a successful installation, please make sure all Subset of endpoints for ESU only are...

KLA91048 SUI vulnerability in Microsoft Products (ESU)

A spoofing vulnerability was found in Microsoft Microsoft Products Extended Security Update. Malicious users can exploit this vulnerability to perform cross-site scripting attack, spoof user interface. Original advisories CVE-2026-42897 Exploitation Public exploits exist for this vulnerability...

April 14, 2026-Security and Quality Rollup for .NET Framework 3.5 for Windows Server 2012 (KB5082398)

April 14, 2026-Security and Quality Rollup for .NET Framework 3.5 for Windows Server 2012 KB5082398 Applies to: Microsoft .NET Framework 3.5 Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows...

KLA90926 Multiple vulnerabilities in Microsoft Products (ESU)

Multiple vulnerabilities were found in Microsoft Products Extended Security Update. Malicious users can exploit these vulnerabilities to gain privileges, execute arbitrary code, bypass security restrictions, obtain sensitive information, cause denial of service, spoof user interface. Below is a...

Description of the security update for Microsoft Exchange Server 2016 CU23: February 10, 2026 (KB5074995)

Description of the security update for Microsoft Exchange Server 2016 CU23: February 10, 2026 KB5074995 This security update resolves vulnerabilities in Microsoft Exchange Server. To learn more about these vulnerabilities, see the following Common Vulnerabilities and Exposures CVE: CVE-2026-21527...

Description of the security update for Microsoft Exchange Server 2019 CU15: February 10, 2026 (KB5074993)

Description of the security update for Microsoft Exchange Server 2019 CU15: February 10, 2026 KB5074993 This security update resolves vulnerabilities in Microsoft Exchange Server. To learn more about these vulnerabilities, see the following Common Vulnerabilities and Exposures CVE: CVE-2026-21527...

KLA90988 Multiple vulnerabilities in Microsoft Products (ESU)

Multiple vulnerabilities were found in Microsoft Products Extended Security Update. Malicious users can exploit these vulnerabilities to bypass security restrictions, gain privileges, cause denial of service. Below is a complete list of vulnerabilities: 1. Heap buffer overflow vulnerability can b...

KLA90884 PE vulnerability in Microsoft Products (ESU)

An elevation of privilege vulnerability was found in Microsoft Products Extended Security Update. Malicious users can exploit this vulnerability to gain privileges. Original advisories CVE-2025-59220 Exploitation Related products Microsoft-Windows Microsoft-Windows-Server Microsoft-Windows-10...

July 8, 2025—KB5062592 (Monthly Rollup)

July 8, 2025—KB5062592 Monthly Rollup Windows Secure Boot certificate expirationImportant: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. Microsoft has been updating these certificates on consumer and non-managed business devices for the past months...

June 10, 2025—KB5061059 (Monthly Rollup)

June 10, 2025—KB5061059 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012. For a successful installation, please make sure all Subset of endpoints for ESU only are...

April 8, 2025—KB5055557 (Monthly Rollup)

April 8, 2025—KB5055557 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012 R2. For a successful installation, please make sure all Subset of endpoints for ESU only...

March 11, 2025—KB5053887 (Monthly Rollup)

March 11, 2025—KB5053887 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012 R2. For a successful installation, please make sure all Subset of endpoints for ESU only...

March 11, 2025—KB5053886 (Monthly Rollup)

March 11, 2025—KB5053886 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012. For a successful installation, please make sure all Subset of endpoints for ESU only ar...

January 14, 2025—KB5050048 (Monthly Rollup)

January 14, 2025—KB5050048 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012 R2. For a successful installation, please make sure all Subset of endpoints for ESU on...

December 10, 2024—KB5048735 (Monthly Rollup)

December 10, 2024—KB5048735 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012 R2. For a successful installation, please make sure all Subset of endpoints for ESU...

November 12, 2024—KB5046682 (Monthly Rollup)

November 12, 2024—KB5046682 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012 R2. For a successful installation, please make sure all Subset of endpoints for ESU...

October 8, 2024—KB5044343 (Monthly Rollup)

October 8, 2024—KB5044343 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012 R2. For a successful installation, please make sure all Subset of endpoints for ESU onl...

October 8, 2024-Security and Quality Rollup for .NET Framework 3.5.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2008 R2 SP1 (KB5044095)

October 8, 2024-Security and Quality Rollup for .NET Framework 3.5.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2008 R2 SP1 KB5044095 Applies to: Microsoft .NET Framework 3.5.1 Microsoft .NET Framework 4.6.2 Microsoft .NET Framework 4.7 Microsoft .NET Framework 4.7.1 Microsoft .NET Framewo...

June 11, 2024—KB5039260 (Monthly Rollup)

June 11, 2024—KB5039260 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012. For a successful installation, please make sure all Subset of endpoints for ESU only are...

August 13, 2024—KB5041828 (Monthly Rollup)

August 13, 2024—KB5041828 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012 R2. For a successful installation, please make sure all Subset of endpoints for ESU onl...