Microsoft SMB Client Remote Code Execution Vulnerabilities (2536276)

Summary
This host is missing a critical security update according to Microsoft Bulletin MS11-043.
Impact
Successful exploitation could allow remote attacker to execute arbitrary code by creating a specially crafted SMB responses. Impact Level: System
Solution
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/MS11-043.mspx
Insight
The flaws are due to errors in SMB client implementation which fails to validate specially crafted SMB responses.
Affected
Microsoft Windows 7 Service Pack 1 and prior Microsoft Windows XP Service Pack 3 and prior Microsoft Windows 2003 Service Pack 2 and prior Microsoft Windows Vista Service Pack 1/2 and prior Microsoft Windows Server 2008 Service Pack 1/2 and prior
References