Heap-based buffer overflow in RealNetworks RealPlayer 11.0 through 11.1 and 14.0.0 through 14.0.5 and RealPlayer SP 1.0 through 1.1.5 allows remote attackers to execute arbitrary code via a crafted SIPR stream.
http://www.securitytracker.com/id?1025943
http://service.real.com/realplayer/security/08162011_player/en/