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CVE-2026-69821— Active Directory Certificate Services (AD CS) Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft Windows 10 Version 1607
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.

Active Directory 证书服务（AD CS）中存在输出编码或转义不当的问题，使得经过授权的攻击者能够在本地提升权限。

CVSS 7.8 · High EPSS 0.31% · P23

Affected Version Matrix 13

VendorProduct Version RangeStatus
Microsoft Windows 10 Version 1607 10.0.14393.0< 10.0.14393.9512 affected
Microsoft Windows 10 Version 1809 10.0.17763.0< 10.0.17763.9245 affected
Microsoft Windows Server 2012 6.2.9200.0< 6.2.9200.26349 affected
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0< 6.2.9200.26349 affected
Microsoft Windows Server 2012 R2 6.3.9600.0< 6.3.9600.23397 affected
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0< 6.3.9600.23397 affected
Microsoft Windows Server 2016 10.0.14393.0< 10.0.14393.9512 affected
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0< 10.0.14393.9512 affected
Microsoft Windows Server 2019 10.0.17763.0< 10.0.17763.9245 affected
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0< 10.0.17763.9245 affected
Microsoft Windows Server 2022 10.0.20348.0< 10.0.20348.5622 affected
Microsoft Windows Server 2025 10.0.26100.0< 10.0.26100.33438 affected
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0< 10.0.26100.33438 affected
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I. Basic Information for CVE-2026-69821

Vulnerability Information
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Vulnerability Title
Active Directory Certificate Services (AD CS) Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Improper encoding or escaping of output in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges locally.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对输出编码和转义不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Windows 10 Version 1607 10.0.14393.0 ~ 10.0.14393.9512 -
Microsoft Windows 10 Version 1809 10.0.17763.0 ~ 10.0.17763.9245 -
Microsoft Windows Server 2012 6.2.9200.0 ~ 6.2.9200.26349 -
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 ~ 6.2.9200.26349 -
Microsoft Windows Server 2012 R2 6.3.9600.0 ~ 6.3.9600.23397 -
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 ~ 6.3.9600.23397 -
Microsoft Windows Server 2016 10.0.14393.0 ~ 10.0.14393.9512 -
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 ~ 10.0.14393.9512 -
Microsoft Windows Server 2019 10.0.17763.0 ~ 10.0.17763.9245 -
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 ~ 10.0.17763.9245 -
Microsoft Windows Server 2022 10.0.20348.0 ~ 10.0.20348.5622 -
Microsoft Windows Server 2025 10.0.26100.0 ~ 10.0.26100.33438 -
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 ~ 10.0.26100.33438 -

II. Public POCs for CVE-2026-69821

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III. Intelligence Information for CVE-2026-69821

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Vendor Advisories for CVE-2026-69821 (1)

Same Patch Batch · Microsoft · 2026-09-08 · 966 CVEs total

CVE-2026-83941 9.9 CRITICAL Entra ID Elevation of Privilege Vulnerability
CVE-2026-72979 9.8 CRITICAL Windows DHCP Server Remote Code Execution Vulnerability
CVE-2026-69715 9.8 CRITICAL Windows Direct Show Remote Code Execution Vulnerability
CVE-2026-69768 9.8 CRITICAL Windows RNDIS Remote Code Execution Vulnerability
CVE-2026-69525 9.8 CRITICAL Remote Desktop Services Remote Code Execution Vulnerability
CVE-2026-69730 9.8 CRITICAL Windows DNS Server Remote Code Execution Vulnerability
CVE-2026-69276 9.8 CRITICAL Microsoft UxTheme Library (uxtheme.dll) Remote Code Execution Vulnerability
CVE-2026-69769 9.8 CRITICAL Windows HTTP Print Provider Remote Code Execution Vulnerability
CVE-2026-69491 9.8 CRITICAL Microsoft DirectMusic Remote Code Execution Vulnerability
CVE-2026-69845 9.8 CRITICAL Windows DHCP Server Remote Code Execution Vulnerability
CVE-2026-69493 9.8 CRITICAL Windows Event Logging Service Remote Code Execution Vulnerability
CVE-2026-69590 9.8 CRITICAL Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2026-73010 9.8 CRITICAL Microsoft Failover Cluster Remote Code Execution Vulnerability
CVE-2026-78445 9.8 CRITICAL Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability
CVE-2026-73009 9.8 CRITICAL Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability
CVE-2026-69579 9.8 CRITICAL Windows Message Queuing Remote Code Execution Vulnerability
CVE-2026-68839 9.8 CRITICAL Windows USB Mass Storage Class Driver Remote Code Execution Vulnerability
CVE-2026-73025 9.8 CRITICAL Windows iSCSI Security Feature Bypass Vulnerability
CVE-2026-69829 9.8 CRITICAL Windows Shell Remote Code Execution Vulnerability
CVE-2026-69431 9.8 CRITICAL Telnet Client Remote Code Execution Vulnerability

Showing top 20 of 966 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows 10 Version 1607
Same vendor: Microsoft
Same weakness: CWE-116

V. Comments for CVE-2026-69821

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