CyberICT

CVE-2026-41088

Microsoft · Published May 12, 2026

CVSS v3.1

HIGH
Patch availableGet patch

Description

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability. Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Affected Products

  • Windows Server 2022
  • Windows Server 2022 (Server Core installation)
  • Windows 10 Version 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C