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 affects Windows Server 2016, Windows 10, Windows Server 2019, Windows 10 Servers. This CVE ID is unique from CVE-2019-0550.
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0551