CVE-2021-26893: Microsoft Windows Server 2008

Critical severity, CVSS 9.8. EPSS: 7% chance of exploitation in the next 30 days.

Windows DNS Server Remote Code Execution Vulnerability

Affected products

• Microsoft Windows Server 2008: affected versions not specified; version r2 only
• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: affected versions not specified; version 20h2 only; version 1909 only; version 2004 only
• Microsoft Windows Server 2019: affected versions not specified

Published 2021-03-11. Last modified 2026-08-19.