受影响系统：
Microsoft Windows Server 20H2 (Server Core Insta
Microsoft Windows Server 2022 (Server Core insta
Microsoft Windows Server 2022
Microsoft Windows Server 2019 (Server Core Insta
Microsoft Windows Server 2019
Microsoft Windows Server 2004 (Server Core insta
Microsoft Windows 10 21H1 for x64-based Systems
Microsoft Windows 10 21H1 for ARM64-based Systems
Microsoft Windows 10 21H1 for 32-bit Systems
Microsoft Windows 10 20H2 for x64-based Systems
Microsoft Windows 10 20H2 for ARM64-based Systems
Microsoft Windows 10 20H2 for 32-bit Systems
Microsoft Windows 10 2004 for x64-based Systems
Microsoft Windows 10 2004 for ARM64-based Systems
Microsoft Windows 10 2004 for 32-bit Systems
Microsoft Windows 10 1909 for x64-based Systems
Microsoft Windows 10 1909 for ARM64-based Systems
Microsoft Windows 10 1909 for 32-bit Systems
Microsoft Windows 10 1809 for x64-based Systems
Microsoft Windows 10 1809 for ARM64-based Systems
Microsoft Windows 10 1809 for 32-bit Systems
Microsoft Windows 11 for x64-based Systems
Microsoft Windows 11 for ARM64-based Systems
描述：
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CVE(CAN) ID: CVE-2021-40450
Microsoft Windows是一款由美国微软公司开发的窗口化操作系统。
Microsoft Win32k存在权限提升漏洞。攻击者可利用该漏洞提升权限。

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建议：
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厂商补丁：

Microsoft
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目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40450