CVE-2019-1398: Microsoft Windows 10

High severity, CVSS 8.4. EPSS: 3.3% chance of exploitation in the next 30 days.

A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate input from an authenticated user on a guest operating system, aka 'Windows Hyper-V Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-1389, CVE-2019-1397.

Affected products

• Microsoft Windows 10: version 1709 only; version 1803 only; version 1809 only; version 1903 only
• Microsoft Windows Server 2016: version 1803 only; version 1903 only
• Microsoft Windows Server 2019: affected versions not specified

Published 2019-11-12. Last modified 2026-06-17.