This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.
This signature detects attempt to exploit a buffer overflow vulnerability in Microsoft Movie Maker when opening a specially crafted .MSMWW file.
Microsoft Windows Movie Maker is a video editing application available for Microsoft Windows.
Microsoft Windows Movie Maker is prone to a remote buffer-overflow vulnerability. Specifically, this issue occurs due to boundary errors when processing strings in specially crafted project (.MSWMM) files.
An attacker can exploit this issue to execute arbitrary code with the privileges of the user running the application. Failed exploit attempts will cause a denial-of-service condition.
he vendor has released an advisory and updates.