CVE-2026-21519: Microsoft Windows Type Confusion Vulnerability

CVE ID

CVE-2026-21519

Vulnerability Name

Microsoft Windows Type Confusion Vulnerability

• Project: Microsoft
• Product: Windows

Date

• Date Added: 2026-02-10
• Due Date: 2026-03-03

Description

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

Known To Be Used in Ransomware Campaigns?

Unknown

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.

Additional Notes

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21519 ; https://nvd.nist.gov/vuln/detail/CVE-2026-21519

Related Security News

• Microsoft Patches 59 Vulnerabilities Including Six Actively Exploited Zero-Days

More CVEs Info

Common Vulnerabilities & Exposures (CVE) List