cve 2026 55001

The cve 2026 55001 tag covers guidance on an Important-rated elevation-of-privilege vulnerability in Microsoft Active Directory Domain Services. The available discussion focuses on the July 14, 2026 security updates and recommends prioritizing domain controllers running Windows Server 2016, 2019, 2022, and 2025. It explains how improper certificate validation could let an authenticated attacker gain additional privileges locally, and notes the issue’s CVSS 3.1 base score of 7.8 and CWE-295 classification. Administrators can use this tag to follow the vulnerability’s impact, affected server platforms, and patching considerations for Active Directory environments.