Buffer overflow in Microsoft Windows Movie Maker 2.1, 2.6, and 6.0, and Microsoft Producer 2003, allows remote attackers to execute arbitrary code via a crafted project (.MSWMM) file, aka "Movie Maker and Producer Buffer Overflow Vulnerability." Per: http://www.microsoft.com/technet/security/Bulletin/MS10-016.mspx
'[1]These versions of Windows Movie Maker are delivered with the indicated operating systems.
[2]Windows Movie Maker 2.6 is an optional download that can be installed on the indicated operating systems. Windows 7 systems without Movie Maker 2.6 installed are not affected.