CVE-2025-49733

Win32k Elevation of Privilege Vulnerability

State: Published
Severity: 7.8 High
Published: Jul 8, 2025
Updated: Feb 26, 2026
Reserved: Jun 9, 2025

Description

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

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	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	microsoft

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
Windows 10 Version 1809Microsoft	10.0.17763.0 to before 10.0.17763.7558Affected
Windows 10 Version 21H2Microsoft	10.0.19044.0 to before 10.0.19044.6093Affected
Windows 10 Version 22H2Microsoft	10.0.19045.0 to before 10.0.19045.6093Affected
Windows 11 version 22H2Microsoft	10.0.22621.0 to before 10.0.22621.5624Affected
Windows 11 version 22H3Microsoft	10.0.22631.0 to before 10.0.22631.5624Affected
Windows 11 Version 23H2Microsoft	10.0.22631.0 to before 10.0.22631.5624Affected
Windows 11 Version 24H2Microsoft	10.0.26100.0 to before 10.0.26100.4652Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.7558Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.7558Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.3932Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.1732Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.4652Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.4652Affected

References

Win32k Elevation of Privilege Vulnerabilityvendor-advisorypatch

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