rjrmrpln.dll in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.4, and RealPlayer Enterprise 2.1.2 does not properly validate file contents that are used during interaction with a heap buffer, which allows remote attackers to execute arbitrary code via crafted Name Value Property (NVP) elements in logical streams in a media file.
http://www.zerodayinitiative.com/advisories/ZDI-10-212/
http://www.securityfocus.com/bid/44144
http://service.real.com/realplayer/security/10152010_player/en/