CVE-2019-0811: Microsoft Windows Server 2012

High severity, CVSS 7.5. EPSS: 4.5% chance of exploitation in the next 30 days.

A denial of service vulnerability exists in Windows DNS Server when it fails to properly handle DNS queries, aka 'Windows DNS Server Denial of Service Vulnerability'.

Affected products

• Microsoft Windows Server 2012: version r2 only
• Microsoft Windows Server 2016: affected versions not specified; version 1803 only; version 1903 only
• Microsoft Windows Server 2019: affected versions not specified

Published 2019-07-15. Last modified 2026-06-17.