High severity7.0NVD Advisory· Published May 12, 2026· Updated May 14, 2026
CVE-2026-34345
CVE-2026-34345
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34345nvdVendor Advisory
News mentions
2- Patch Tuesday - May 2026Rapid7 Blog · May 13, 2026
- Microsoft May 2026 Patch Tuesday fixes 120 flaws, no zero-daysBleepingComputer · May 12, 2026