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CVE-2026-20920

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CVE-2026-20920

Published: Jan 13, 2026

Modified: Apr 1, 2026

PUBLISHED

CVSS v3.1

7.8

HIGH

Description

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

VendorProductVersions

Microsoft

Windows 11 version 22H3

affected
10.0.22631.0 - < 10.0.22631.6491

Microsoft

Windows 11 Version 23H2

affected
10.0.22631.0 - < 10.0.22631.6491

Microsoft

Windows Server 2022

affected
10.0.20348.0 - < 10.0.20348.4648

Microsoft

Windows Server 2022, 23H2 Edition (Server Core installation)

affected
10.0.25398.0 - < 10.0.25398.2092

Weaknesses (CWE)

CWE-416

CVSS v3.1 Details

CVSS v3.1 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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

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