CVE-2026-21265— Microsoft Windows Secure Boot 安全漏洞
一分钟漏洞结论
影响对象
Microsoft Windows 10 Version 1607
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Microsoft Windows Secure Boot是美国微软（Microsoft）公司的安全启动。 Microsoft Windows Secure Boot存在安全漏洞。攻击者利用该漏洞可以绕过某些功能。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Windows 10 Version 1809 for x64-based Systems,Windows Server 2019,Windows Server 2019 (Server
影响版本矩阵 20
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0< 10.0.14393.8783 |
affected |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0< 10.0.17763.8276 |
affected |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0< 10.0.19044.6809 |
affected |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0< 10.0.19045.6809 |
affected |
| Microsoft | Windows 11 version 23H2 | 10.0.22631.0< 10.0.22631.6491 |
affected |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0< 10.0.22631.6491 |
affected |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0< 10.0.26100.7623 |
affected |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0< 10.0.26200.7623 |
affected |
| Microsoft | Windows Server 2012 | 6.2.9200.0< 6.2.9200.25868 |
affected |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0< 6.2.9200.25868 |
affected |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0< 6.3.9600.22968 |
affected |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0< 6.3.9600.22968 |
affected |
| Microsoft | Windows Server 2016 | 10.0.14393.0< 10.0.14393.8783 |
affected |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0< 10.0.14393.8783 |
affected |
| Microsoft | Windows Server 2019 | 10.0.17763.0< 10.0.17763.8276 |
affected |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0< 10.0.17763.8276 |
affected |
| Microsoft | Windows Server 2022 | 10.0.20348.0< 10.0.20348.4648 |
affected |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0< 10.0.25398.2092 |
affected |
| Microsoft | Windows Server 2025 | 10.0.26100.0< 10.0.26100.32230 |
affected |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0< 10.0.26100.32230 |
affected |
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一、 漏洞 CVE-2026-21265 基础信息
漏洞信息
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Vulnerability Title
Secure Boot Certificate Expiration Security Feature Bypass Vulnerability
来源: CVE Program / CVE List V5
Vulnerability Description
Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes related to Windows boot manager or Secure Boot.
The operating system’s certificate update protection mechanism relies on firmware components that might contain defects, which can cause certificate trust updates to fail or behave unpredictably. This leads to potential disruption of the Secure Boot trust chain and requires careful validation and deployment to restore intended security guarantees.
Certificate Authority (CA)
Location
Purpose
Expiration Date
Microsoft Corporation KEK CA 2011
KEK
Signs updates to the DB and DBX
06/24/2026
Microsoft Corporation UEFI CA 2011
DB
Signs 3rd party boot loaders, Option ROMs, etc.
06/27/2026
Microsoft Windows Production PCA 2011
DB
Signs the Windows Boot Manager
10/19/2026
For more information see this CVE and Windows Secure Boot certificate expiration and CA updates.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
CWE-1329
来源: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Secure Boot 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Microsoft Windows Secure Boot是美国微软（Microsoft）公司的安全启动。 Microsoft Windows Secure Boot存在安全漏洞。攻击者利用该漏洞可以绕过某些功能。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Windows 10 Version 1809 for x64-based Systems,Windows Server 2019,Windows Server 2019 (Server
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2026-21265 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
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同批安全公告 · Microsoft · 2026-01-13 · 共 112 条
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| CVE-2026-20868 | 8.8 HIGH | Microsoft Windows Routing and Remote Access Service 安全漏洞 |
| CVE-2026-20952 | 8.4 HIGH | Microsoft Office 资源管理错误漏洞 |
| CVE-2026-20944 | 8.4 HIGH | Microsoft Word 缓冲区错误漏洞 |
| CVE-2026-20953 | 8.4 HIGH | Microsoft Office 资源管理错误漏洞 |
| CVE-2026-20856 | 8.1 HIGH | Microsoft Windows 输入验证错误漏洞 |
| CVE-2026-20931 | 8.0 HIGH | Microsoft Windows Telephony Server 安全漏洞 |
| CVE-2026-20857 | 7.8 HIGH | Microsoft Windows Cloud Files Mini Filter Driver 安全漏洞 |
| CVE-2026-20924 | 7.8 HIGH | Microsoft Windows 资源管理错误漏洞 |
| CVE-2026-20922 | 7.8 HIGH | Microsoft Windows NTFS 安全漏洞 |
| CVE-2026-20843 | 7.8 HIGH | Microsoft Windows Routing and Remote Access Service 访问控制错误漏洞 |
| CVE-2026-20920 | 7.8 HIGH | Microsoft Win32k 资源管理错误漏洞 |
| CVE-2026-20837 | 7.8 HIGH | Microsoft Windows Media 安全漏洞 |
| CVE-2026-21224 | 7.8 HIGH | Microsoft Azure Connected Machine Agent 安全漏洞 |
| CVE-2026-20840 | 7.8 HIGH | Microsoft Windows NTFS 安全漏洞 |
| CVE-2026-20956 | 7.8 HIGH | Microsoft Excel 安全漏洞 |
| CVE-2026-20877 | 7.8 HIGH | Microsoft Windows 资源管理错误漏洞 |
| CVE-2026-20951 | 7.8 HIGH | Microsoft SharePoint 输入验证错误漏洞 |
| CVE-2026-20946 | 7.8 HIGH | Microsoft Excel 缓冲区错误漏洞 |
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IV. Related Vulnerabilities
V. Comments for CVE-2026-21265
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