Heap-based buffer overflow in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.4, and RealPlayer Enterprise 2.1.2 allows remote attackers to have an unspecified impact via a crafted SOUND file.
http://www.securitytracker.com/id?1024861
http://service.real.com/realplayer/security/12102010_player/en/