MICROSOFT-CVE-2026-33839

HIGH7.0

Win32k Elevation of Privilege Vulnerability

Published May 12, 2026

Modified 5 days ago

Details

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

References

ADVISORY

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33839

CVSS Analysis

CVSS v2.0

7.0

Upstream

CVE-2026-33839

Ecosystems

Timeline

PublishedMay 12, 2026

ModifiedMay 14, 2026