CVE-2026-21519: Microsoft Windows Type Confusion Vulnerability

Added to the CISA Known Exploited Vulnerabilities catalog on 10 Feb 2026. Vendor: Microsoft. Product: Windows.

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

Required 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. (due 03 Mar 2026)