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CVE-2026-21519

Microsoft Windows Type Confusion Vulnerability

Description

Microsoft Desktop Windows Manager contains a type confusion vulnerability that could allow an authorized attacker to elevate privileges locally.

Recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA remediation due date for U.S. federal agencies: 3 Mar 2026.

Collected automatically from public sources. Verify affected versions and fixes in the vendor's notice before acting.