Heap-based buffer overflow in RealNetworks RealPlayer 11.0 through 11.1 RealPlayer SP 1.0 through 1.1.4 RealPlayer Enterprise 2.1.2 Mac RealPlayer 11.0 through 12.0.0.1444 Linux RealPlayer 11.0.2.1744 and possibly HelixPlayer 1.0.6 and other versions allows remote attackers to have an unspecified impact via a crafted RA5 file.