2026-03 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5078766)

A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article...

March 10, 2026—KB5078752 (OS Build 17763.8511)

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March 10, 2026—Hotpatch KB5078736 (OS Build 26100.32463)

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March 10, 2026—KB5078740 (OS Build 26100.32522)

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March 10, 2026—KB5078734 (OS Build 25398.2207)

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March 10, 2026—KB5078938 (OS Build 14393.8957)

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March 10, 2026—KB5078766 (OS Build 20348.4893)

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March 10, 2026—KB5078775 (Monthly Rollup)

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March 10, 2026—KB5078774 (Monthly Rollup)

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Microsoft Windows 缓冲区错误漏洞

Microsoft Windows is an operating system used by personal devices by the American company Microsoft. Microsoft Windows has a buffer error vulnerability. Attackers can exploit this vulnerability to gain higher privileges. The following products and versions are affected: Windows Server 2022 Server...

Microsoft Windows 资源管理错误漏洞

Microsoft Windows is an operating system used by personal devices by the American company Microsoft. There is a resource management vulnerability in Microsoft Windows. Attackers can exploit this vulnerability to gain higher privileges. The following products and versions are affected: Windows 11...

Microsoft Projected File System 访问控制错误漏洞

The Microsoft Projected File System is an application system developed by Microsoft Corporation. It projects hierarchical data into the file system, making it appear as files and directories within the file system. The Microsoft Projected File System has an access control vulnerability. Attackers...

Microsoft Graphics Component 缓冲区错误漏洞

The Microsoft Graphics Component is a graphics driver component developed by Microsoft Corporation. There is a buffer overflow vulnerability present in the Microsoft Graphics Component. Attackers can exploit this vulnerability to obtain sensitive information. The following products and versions a...

Microsoft Windows Ancillary Function Driver for WinSock 资源管理错误漏洞

The Microsoft Windows Ancillary Function Driver for WinSock is a supplementary function driver for Winsock developed by Microsoft Corporation. There is a resource management vulnerability present in the Microsoft Windows Ancillary Function Driver for WinSock. Attackers can exploit this...

Microsoft多款产品 资源管理错误漏洞

Microsoft Windows 10, among others, are products of the American company Microsoft. Microsoft Windows 10 is a desktop operating system. Microsoft Windows Server 2012 is also a desktop operating system. Microsoft Windows 11 is a set of personal computer operating systems. Several of Microsoft’s...

Microsoft Windows Ancillary Function Driver for WinSock 代码问题漏洞

The Microsoft Windows Ancillary Function Driver for WinSock is a accessibility driver for Winsock from Microsoft Corporation. There are code-related vulnerabilities in the Microsoft Windows Ancillary Function Driver for WinSock. Attackers can exploit these vulnerabilities to gain elevated...

Microsoft Windows Routing and Remote Access Service 输入验证错误漏洞

The Microsoft Windows Routing and Remote Access Service is a network service provided by Microsoft that enables features such as network routing, virtual private networks VPNs, and dial-up connections. There is an input validation vulnerability in the Microsoft Windows Routing and Remote Access...

Microsoft Windows Shell 信息泄露漏洞

Microsoft Windows Shell is the graphical user interface of the Windows operating system developed by Microsoft. Key features of the Windows Shell include the desktop, taskbar, start menu, task switcher, and auto-play functions. In some versions of Windows, features like Flip 3D and Charm are also...

Microsoft Windows GDI 代码问题漏洞

Microsoft Windows GDI is a core underlying standard interface within the Windows operating system developed by Microsoft, responsible for drawing graphical objects on the screen or printer, managing fonts, and processing images. There are code vulnerabilities in Microsoft Windows GDI. Attackers c...

KB5078938: Windows 10 Version 1607 / Windows Server 2016 Security Update (March 2026)

The remote Windows host is missing security update 5078938. It is, therefore, affected by multiple vulnerabilities - Use after free in Windows Print Spooler Components allows an authorized attacker to execute code over a network. CVE-2026-23669 - Use after free in Windows Win32K allows an...