CVE-2026-58634

Desktop Window Manager Elevation of Privilege Vulnerability

CVE-2026-58634 is fixed in 2 products on 1 platform, first by KB5101649, released July 14, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.8

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0033

26th percentile

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

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 11 Version 26H1 for ARM64-based Systems	28000.2525	KB5101649	Jul 14, 2026
Windows 11 version 26H1 for x64-based Systems	28000.2525	KB5101649	Jul 14, 2026

Details

Published
July 14, 2026
Weakness
Use After Free
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58634

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