A remote code execution vulnerability exists when Windows Hyper-V Network Switch running 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-2017-0162, CVE-2017-0180, and CVE-2017-0181.
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0163