Knowledgebase Catalog

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KB# Last Updated Description
KB5120695 Sep 30, 2026 KB5120695 is a Security and Quality Rollup for .NET Framework 3.5 targeting Windows Server 2012 R2, released on September 8, 2026. This update addresses six security vulnerabilities affecting .NET Framework 3.5, including elevation of privilege and remote code execution issues.…
KB5120716 Sep 30, 2026 KB5120716 is a Security and Quality Rollup for .NET Framework 3.5 targeting Windows Server 2012, released on August 11, 2026 and reissued on September 8, 2026 with no changes. This update is part of the Extended Security Updates (ESU) program…
KB5120701 Sep 30, 2026 KB5120701 is an August 11, 2026 cumulative security and reliability update for .NET Framework 3.5 and 4.8 targeting Windows 10 Version 21H2 and 22H2. The patch addresses six critical vulnerabilities including multiple remote code execution and elevation of privilege issues.…
KB5121649 Sep 30, 2026 KB5121649 is a Security and Quality Rollup released on August 11, 2026, addressing critical vulnerabilities in .NET Framework versions 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, and 4.8 on Windows Server 2012 R2. The update resolves six security vulnerabilities including elevation of…
KB5120236 Sep 30, 2026 KB5120236 is a servicing stack update (SSU) released on August 11, 2026, for Windows 10 version 1607 and Windows Server 2016. This update enhances the servicing stack component responsible for installing Windows updates, ensuring devices can reliably receive and install…
KB5122105 Sep 30, 2026 .NET 9.0 Update released on August 11, 2026, containing security fixes for the .NET 9.0 runtime. This servicing update applies to supported Windows client and server operating systems running .NET 9.0. The update follows Microsoft's standard servicing model where newer…
KB5120385 Sep 30, 2026 KB5120385 is an August 2026 Monthly Rollup update for Windows Server 2012 R2 ESU (Extended Security Update). This cumulative security update addresses quality improvements and security vulnerabilities. It applies to Windows Server 2012 R2 systems that are under Extended Security…
KB5120386 Sep 30, 2026 KB5120386 is a monthly cumulative security update for Windows Server 2012 released on August 11, 2026. This patch is part of the Extended Security Updates (ESU) program and addresses security vulnerabilities and quality improvements. The update is critical for systems…
KB5121001 Sep 30, 2026 KB5121001 is a Safe OS Dynamic Update released on August 27, 2026, for Windows 11 version 26H1 across all editions. This update focuses on enhancements to the Windows Recovery Environment (WinRE), which is the system used for troubleshooting and recovery…
KB5122106 Sep 30, 2026 .NET 10.0 Update released on August 11, 2026, delivering security fixes for the .NET 10.0 runtime. This servicing update is available through Microsoft Update for Windows client systems and through WSUS and the MU Catalog for Windows Server environments. The…
KB5122386 Sep 30, 2026 KB5122386 is a cumulative update for .NET Framework 4.8.1 released on August 27, 2026, targeting Windows 11 version 26H1. This update delivers security and reliability enhancements to the .NET Framework runtime environment. The patch is distributed through Windows Update, Microsoft…
KB5121647 Sep 30, 2026 KB5121647 is a cumulative security and quality update for .NET Framework 3.5, 4.8, and 4.8.1 released on August 11, 2026, targeting Windows 10 Version 22H2. This patch addresses multiple critical vulnerabilities including remote code execution and elevation of privilege issues…
KB5120747 Sep 30, 2026 KB5120747 is a cumulative security update for .NET Framework 3.5 released on August 11, 2026, targeting Windows 11 version 26H1 (build 28000) and later. This update delivers the complete .NET Framework 3.5 product as a full standalone installer rather than…
KB5120699 Sep 30, 2026 KB5120699 is an August 11, 2026 security and quality rollup for .NET Framework 4.6.2, 4.7, 4.7.1, and 4.7.2 on Windows Server 2012. This update addresses six critical security vulnerabilities including elevation of privilege and remote code execution issues. It is…
KB5120238 Sep 30, 2026 KB5120238 is a cumulative security and quality update released on August 11, 2026, for Windows Server 2019 and Windows 10 version 1809 (OS Build 17763.9121). This patch addresses security vulnerabilities and includes stability improvements for enterprise systems running these legacy…
KB5120698 Sep 30, 2026 Released on August 11, 2026, KB5120698 is a cumulative security and reliability update for .NET Framework 3.5 and 4.7.2 targeting Windows 10 version 1809 and Windows Server 2019. This update addresses multiple critical vulnerabilities including elevation of privilege and remote…
KB5120711 Sep 30, 2026 KB5120711 is a cumulative security and reliability update for .NET Framework 4.8.1 released on August 11, 2026, targeting Windows 11 version 26H1. This patch addresses six critical security vulnerabilities including elevation of privilege and remote code execution flaws. The update…
KB5120243 Sep 30, 2026 KB5120243 is a Setup Dynamic Update for Windows Server 2022, released on August 11, 2026. This patch enhances Windows setup binaries and related installation files used during feature updates. The update applies to Windows Server 2022 systems and requires no…
KB5120998 Sep 30, 2026 KB5120998 is a cumulative preview update for Windows 11 versions 25H2 and 24H2, released on August 27, 2026 (OS Builds 26200.9278 and 26100.9278). This update introduces significant user interface customization features including a movable taskbar, resizable Start menu, and improved…
KB5121003 Sep 30, 2026 KB5121003 is the August 11, 2026 cumulative security update for Windows 11 versions 25H2 and 24H2 (OS Builds 26200.9168 and 26100.9168). This patch includes security improvements, Secure Boot certificate updates, and removal of the Drop Tray experience. The update affects…
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