Microsoft Windows Help File Unspecified Heap Overflow Vulnerability
"This vulnerability presents itself when the application handles a specially crafted Windows Help ('.hlp') file.
A successful attack may facilitate arbitrary code execution in the context of a vulnerable user who opens a malicious file. Failed exploit attempts will likely result in denial-of-service conditions."
/*
It looks like there's a
proof-of-concept in the wild for this one, too. This is a specially crafted .hlp file. I advise against trying to open it until you know what it does.
*/