cve 2026 50305

The cve 2026 50305 tag covers Microsoft’s security response to a high-severity local privilege-escalation vulnerability in the Microsoft Brokering File System. The reported use-after-free flaw affects Windows 11 24H2, Windows 11 25H2, Windows 11 26H1, and Windows Server 2025, and requires an attacker to have already obtained some local access. Coverage focuses on Microsoft’s fix, including cumulative security update KB5101650, and on verifying that systems meet the corrected build thresholds. The vulnerability has a CVSS 3.1 base score of 7.8. This archive is intended for administrators tracking remediation, affected Windows versions, and deployment of the relevant security update.