Internet Information Services (IIS) FTP Service Remote Code Execution Vulnerability (2489256)

This host is missing a critical security update according to Microsoft Bulletin MS11-004.
Successful exploitation could allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted FTP request that triggers memory corruption. 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,
The flaw is due to a boundary error when encoding Telnet IAC characters in a FTP response. This can be exploited without authenticating to the FTP service to cause a heap-based buffer overflow by sending an overly long, specially crafted FTP request.
Microsoft Internet Information Services (IIS) version 7.0 - On Microsoft Windows Vista/2008 server Service Pack 2 and prior Microsoft Internet Information Services (IIS) version 7.5 - On Microsoft Windows 7 Service Pack 1 and prior