The host is installed with Microsoft Windows 7 SP1, Server 2008 R2 SP1, Windows 8, 8.1, Server 2012 or Server 2012 R2 and is prone to a security feature bypass vulnerability. A flaw is present in the Windows Task Scheduler,which fails to properly validate and enforce impersonation levels. Successful exploitation could allow attackers to bypass ACL checks and run privileged executables.