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

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-14 · updated 2026-11-01
Weakness: CWE-416

Description

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

Affected products

Microsoft Windows 11 version 26H1: before 10.0.28000.2525 — fixed in 10.0.28000.2525
Microsoft Windows 11 version 26H1: from 10.0.28000.0 before 10.0.28000.2525 — fixed in 10.0.28000.2525

How to fix

Upgrade to a fixed version: Microsoft Windows 11 version 26H1 10.0.28000.2525; Microsoft Windows 11 version 26H1 10.0.28000.2525. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58633

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