This host is missing an important security update according to Microsoft Bulletin MS11-046.

Successful exploitation could allow elevation of privilege if an attacker logs on to a user's system and runs a specially crafted application. Impact Level: System/Application

Run Windows Update and update the listed hotfixes or download and update mentioned hotfixes in the advisory from the below link, http://www.microsoft.com/technet/security/bulletin/ms11-046.mspx

The flaw is caused by an error in Ancillary Function Driver (AFD) which does not properly validates input before passing the input from user mode to the Windows kernel.

Microsoft Windows 7 Service Pack 1 and prior Microsoft Windows XP Service Pack 3 and prior Microsoft Windows 2K3 Service Pack 2 and prior Microsoft Windows Vista Service Pack 2 and prior Microsoft Windows Server 2008 Service Pack 2 and prior

• http://support.microsoft.com/kb/2503665
• http://www.microsoft.com/technet/security/bulletin/MS11-046.mspx

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Updated on 2015-03-25