Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allow an attacker to elevate privilege when tdx.sys fails to check the length of a buffer prior to copying memory to it, aka “Windows TDX Elevation of Privilege Vulnerability”.