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MSRC compact vulnerability detail

CVE-2026-41088 · Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

External control of file name or path in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Severity
Important
Impact
Elevation of Privilege
CVSS
7.8 base · 6.8 temporal
Release
2026-05-12
Signals
Windows Ancillary Function Driver for WinSock Elevation of Privilege Exploited: No Publicly disclosed: No Exploitability: Exploitation Unlikely
CWE
CWE-73: External Control of File Name or Path
Patch Diff
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Resolved binary override
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Description
External control of file name or path in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
FAQ / Articles
FAQ
What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
External control of file name or path in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.