cve 2026 54121

  1. CVE-2026-54121: Patch AD CS Privilege Escalation by July 14

    CVE-2026-54121 is a high-severity Active Directory Certificate Services privilege-escalation vulnerability that can let an authenticated attacker gain additional privileges remotely. Microsoft fixed the flaw in its July 14, 2026 security updates, making patching certificate authority servers the...
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    • active directory ad cs security cve 2026 54121 windows server updates
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