CVE-2026-27922
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Published Apr 14, 2026 · updated Oct 14, 2026 · microsoft windows 10 1607
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Timeline
Detection, updates, and resolution for this record.
Apr 14, 2026 · NIST NVD
Detected
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Oct 14, 2026 · NIST NVD
Updated
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Affected
- cpe microsoft/windows 10 1607version unspecified
- cpe microsoft/windows 10 1809version unspecified
- cpe microsoft/windows 10 21h2version unspecified
- cpe microsoft/windows 10 22h2version unspecified
Sources
- CVE.orgCVE-2026-27922
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-27922
30-day exploitation probability 0.3%
first.org - NIST NVDCVE-2026-27922
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
nvd.nist.gov