Integer overflow in pnen3260.dll in RealPlayer 8 through 10.5 (6.0.12.1040) and earlier, and RealOne Player 1 or 2 on Windows or Mac OS, allows remote attackers to execute arbitrary code via a SMIL file and a .rm movie file with a large length field for the data chunk, which leads to a heap-based buffer overflow.

The PNG deflate algorithm in RealOne Player 6.0.11.x and earlier, RealPlayer 8/RealPlayer Plus 8 6.0.9.584, and other versions allows remote attackers to corrupt the heap and overwrite arbitrary memory via a PNG graphic file format containing compressed data using fixed trees that contain the length values 286-287, which are treated as a very large length.