Windows Media Player Remote Stack Buffer Overflow Vulnerability
Windows Media Player is prone to a stack-based buffer-overflow issue because it fails to perform adequate boundary checks on user-supplied data.
Successfully exploiting this issue allows remote attackers to execute arbitrary code in the context of the user running the application. Failed exploit attempts likely result in denial-of-service conditions.
Windows Media Player 6.4 is vulnerable; other versions may also be affected.
To exploit this issue an attacker must entice an unsuspecting user to open a malicious MP4 file.
Note: Proof of Concept is available
http://www.securityfocus.com/bid/26773/discuss