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CVE-2026-105590— Windows Active Directory Certificate Services Security Feature Bypass

Quick assessment

Affected
Microsoft Windows Server 2016
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Windows 活动目录证书服务（Active Directory Certificate Services）中存在证书验证不当的漏洞，允许经过授权的攻击者通过网络绕过某项安全功能。

CVSS 5.3 · Medium

Affected Version Matrix 7

VendorProduct Version RangeStatus
Microsoft Windows Server 2016 10.0.14393.0< 10.0.14393.9688 affected
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0< 10.0.14393.9688 affected
Microsoft Windows Server 2019 10.0.17763.0< 10.0.17763.9487 affected
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0< 10.0.17763.9487 affected
Microsoft Windows Server 2022 10.0.20348.0< 10.0.20348.5870 affected
Microsoft Windows Server 2025 10.0.26100.0< 10.0.26100.33822 affected
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0< 10.0.26100.33822 affected
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I. Basic Information for CVE-2026-105590

Vulnerability Information
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Vulnerability Title
Windows Active Directory Certificate Services Security Feature Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Improper certificate validation in Windows Active Directory Certificate Services allows an authorized attacker to bypass a security feature over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Windows Server 2016 10.0.14393.0 ~ 10.0.14393.9688 -
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 ~ 10.0.14393.9688 -
Microsoft Windows Server 2019 10.0.17763.0 ~ 10.0.17763.9487 -
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 ~ 10.0.17763.9487 -
Microsoft Windows Server 2022 10.0.20348.0 ~ 10.0.20348.5870 -
Microsoft Windows Server 2025 10.0.26100.0 ~ 10.0.26100.33822 -
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 ~ 10.0.26100.33822 -

II. Public POCs for CVE-2026-105590

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III. Intelligence Information for CVE-2026-105590

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Other References for CVE-2026-105590 (1)

Same Patch Batch · Microsoft · 2026-11-10 · 1094 CVEs total

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CVE-2026-66801 9.8 CRITICAL Microsoft Xbox Remote Code Execution Vulnerability
CVE-2026-120779 9.6 CRITICAL Visual Studio Code Remote Code Execution Vulnerability
CVE-2026-114162 9.1 CRITICAL Microsoft Graph Elevation of Privilege Vulnerability

Showing top 20 of 1094 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows Server 2016
Same vendor: Microsoft
Same weakness: CWE-295