Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, and Windows Server 2008 SP2 allow remote attackers to execute arbitrary code via a crafted screensaver in a theme file, aka "Windows Theme File Remote Code Execution Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18579
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-071