CVE-2026-69821: Active Directory Certificate Services (AD CS) Elevation of Privilege Vulnerability
Active Directory Certificate Services (AD CS) Elevation of Privilege Vulnerability
Other sources
Improper encoding or escaping of output in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges locally.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.23397Patch KB5123066 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9512Patch KB5123099 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26349Patch KB5123065 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5622Patch KB5122882 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9245Patch KB5122876
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
The attacker must already be authorized on the affected system and have local access. The vulnerability does not require user interaction.
What is the likely impact if exploitation succeeds?
Successful exploitation can allow elevation of privilege and has high potential impact on confidentiality, integrity, and availability.
Which systems are identified as affected?
The listed affected products are Microsoft Windows 10 and Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025.