HIGHCVE-2026-20863Published Modified CNA microsoft
CVE-2026-20863: Win32k Elevation of Privilege Vulnerability
Double free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
Metrics
- CVSS v3.1
- 7.0
- Severity
- HIGH
- Fixed in
- 10.0.20348.4648
- Affected Products
- 8
Fix available
10.0.20348.464810.0.22631.649110.0.25398.209210.0.26100.762310.0.26100.3223010.0.26200.7623
Patch commits
Affected packages
- Microsoft / Windows 11 version 22H3< 10.0.22631.6491 (from 10.0.22631.0)
- Microsoft / Windows 11 Version 23H2< 10.0.22631.6491 (from 10.0.22631.0)
- Microsoft / Windows 11 Version 24H2< 10.0.26100.7623 (from 10.0.26100.0)
- Microsoft / Windows 11 Version 25H2< 10.0.26200.7623 (from 10.0.26200.0)
- Microsoft / Windows Server 2022< 10.0.20348.4648 (from 10.0.20348.0)
- Microsoft / Windows Server 2022, 23H2 Edition (Server Core installation)< 10.0.25398.2092 (from 10.0.25398.0)
- Microsoft / Windows Server 2025< 10.0.26100.32230 (from 10.0.26100.0)
- Microsoft / Windows Server 2025 (Server Core installation)< 10.0.26100.32230 (from 10.0.26100.0)
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C