cve 2026 50503

The cve 2026 50503 tag covers Microsoft’s fix for an Important-rated Windows Runtime elevation-of-privilege vulnerability. The issue affects Windows 11 24H2, Windows 11 25H2, Windows 11 26H1, and Windows Server 2025, and requires an attacker to have existing local, low-privilege access. Successful exploitation could allow full control of an affected system. Microsoft assigned the vulnerability a CVSS 3.1 base score of 7.0 and said it was not known to be publicly disclosed or exploited, with exploitation considered less likely. Tagged coverage focuses on installing the applicable cumulative update, including KB5101650, to address the security issue.