Microsoft Windows Media Player (WMP) 9 through 12 does not properly deallocate objects during a browser reload action, which allows user-assisted remote attackers to execute arbitrary code via crafted media content referenced in an HTML document, aka "Windows Media Player Memory Corruption Vulnerability."
The Microsoft WMV video codec in wmv9vcm.dll, wmvdmod.dll in Windows Media Format Runtime 9 and 9.5, and wmvdecod.dll in Windows Media Format Runtime 11 and Windows Media Player 11 and 12 allows remote attackers to execute arbitrary code via a crafted media file, aka "WMV Video Decoder Remote Code Execution Vulnerability."
Microsoft Windows Media Player 10 through 12 allows remote attackers to execute arbitrary code via a crafted DataObject on a web site, aka "Windows Media Player RCE via DataObject Vulnerability."