The host is missing an Important security update according to Microsoft security bulletin, MS11-054. The update is required to fix elevation of privilege vulnerability in Windows 7 or Windows Server 2003 or Windows Server 2008 or Windows Vista or Windows XP. A flaw is present in windows Kernel-mode drivers in the Microsoft Windows, which does not properly manage kernel-mode driver objects. Successful exploitation allows attackers to run arbitrary code in kernel mode like install programs, view, change or delete data or create new accounts with full administrative rights.