cve 2026 54119

The cve 2026 54119 tag covers reporting on a remotely triggerable Windows Active Directory denial-of-service vulnerability. The issue affects domain controllers and other systems exposing directory services, requires no authentication or user interaction, and can force Active Directory into an infinite loop that consumes service availability until recovery. Microsoft rates the vulnerability Important and assigns it a CVSS 3.1 score of 7.5. Coverage focuses on prioritizing Microsoft’s July 14, 2026 security updates and the administrative implications for organizations operating Active Directory. This archive is intended for administrators tracking the flaw, its severity, affected directory-service environments, and the recommended patching timeline.