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7.0

Windows Ancillary Function Driver for WinSock Privilege Elevation Risk

CVE-2026-25178
Summary

An attacker with authorized access to a Windows system can exploit a flaw in the Windows Ancillary Function Driver for WinSock to gain higher-level access to the system. This could allow the attacker to make unauthorized changes or access sensitive information. To mitigate this risk, users should ensure they keep their Windows systems up-to-date with the latest security patches and follow best practices for network security.

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: 10 Mar 2026 · Updated: 14 Mar 2026 · First seen: 11 Mar 2026