CVE-2026-20920

HIGH

Windows Win32K - ICOMP < - Privilege Escalation

Title source: llm
STIX 2.1

Description

Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.

References (1)

Core 1
Core References

Scores

CVSS v3 7.8
EPSS 0.0005
EPSS Percentile 15.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-416
Status published
Products (7)
Microsoft/Windows 11 version 22H3 10.0.22631.0 - 10.0.22631.6491
Microsoft/Windows 11 Version 23H2 10.0.22631.0 - 10.0.22631.6491
Microsoft/Windows Server 2022 10.0.20348.0 - 10.0.20348.4648
Microsoft/Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 - 10.0.25398.2092
microsoft/windows_11_23h2 < 10.0.22631.6491
microsoft/windows_server_2022 < 10.0.20348.4648
microsoft/windows_server_2022_23h2 < 10.0.25398.2092
Published Jan 13, 2026
Tracked Since Feb 18, 2026