CVE-2021-34521: Microsoft Windows 10

High severity, CVSS 7.8. EPSS: 2.4% chance of exploitation in the next 30 days.

Raw Image Extension Remote Code Execution Vulnerability

Affected products

• Microsoft Windows 10: version 20h2 only; version 21h1 only; version 1909 only
• Microsoft Windows Server 2016: version 20h2 only

Published 2021-07-14. Last modified 2026-08-10.