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7.0

Windows Ancillary Function Driver for WinSock Privilege Escalation

CVE-2026-27922
Summary

An attacker with local access can exploit a flaw in the Windows Ancillary Function Driver for WinSock to gain elevated privileges, potentially leading to unauthorized access and control over the system. This requires the attacker to have existing access to the system, but could allow them to gain more powerful access. System administrators should review and update the Windows Ancillary Function Driver for WinSock as soon as possible to prevent potential exploitation.

Original title
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Original description
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
nvd CVSS3.1 7.0
Vulnerability type
CWE-416 Use After Free
Published: 14 Apr 2026 · Updated: 14 Apr 2026 · First seen: 14 Apr 2026