CyberICT

CVE-2026-21250

Microsoft · Published February 10, 2026

CVSS v3.1

HIGH
Patch availableGet patch

Description

Windows HTTP.sys Elevation of Privilege Vulnerability. Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.

Affected Products

  • Windows Server 2025 (Server Core installation)
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows Server 2022, 23H2 Edition (Server Core installation)

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