A remote code execution vulnerability exists when âWindows Theme APIâ does not properly decompress files, aka âWindows Theme API Remote Code Execution Vulnerability.â This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.