CVE-2026-58633: Desktop Window Manager Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7.8)

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

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2026-Jul

Released

2026-07-14

Description

Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

FAQ

What privileges could be gained by an attacker who successfully exploited the vulnerability? A domain user could use this vulnerability to elevate privileges to SYSTEM assigned integrity level.

Affected Products (2)

Windows

• Windows 11 version 26H1 for x64-based Systems
• Windows 11 Version 26H1 for ARM64-based Systems

Security Updates (1)

• 5101649

Acknowledgments

<a href="https://mylostchristmas.tistory.com/20">Seung Chan Kim</a>

Revision History

• 2026-07-14: Information published.