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MSRC compact vulnerability detail

CVE-2026-21519 · Desktop Window Manager Elevation of Privilege Vulnerability

Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

Severity
Important
Impact
Elevation of Privilege
CVSS
7.8 base · 6.8 temporal
Release
2026-02-10
Signals
Desktop Window Manager Elevation of Privilege Exploited: Yes Publicly disclosed: No Exploitability: Exploitation Detected
CWE
CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')
Patch Diff
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Description
Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
FAQ / Articles
Desktop Window Manager Elevation of Privilege Vulnerability
Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
FAQ
What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.