CVE-2019-0721

CriticalCVSS 9.1/10Last modified Jun 17, 2026

Description

A remote code execution vulnerability exists when Windows Hyper-V Network Switch on a host server fails to properly validate input from an authenticated user on a guest operating system, aka 'Hyper-V Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-0719.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
Microsoft	Windows	10 Version 1709 for x64-based Systems; 10 Version 1803 for x64-based Systems; 10 Version 1809 for x64-based Systems
Microsoft	Windows Server	version 1803 (Core Installation); 2019; 2019 (Core installation)
Microsoft	Windows 10 Version 1903 for x64-based Systems	unspecified
Microsoft	Windows Server, version 1903 (Server Core installation)	unspecified

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0721Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0721Patch, Vendor Advisory

Timeline

Published: Nov 12, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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