FFmpeg before 2017-03-05 has an out-of-bounds write caused by a heap-based buffer overflow related to the ff_h264_slice_context_init function in libavcodec/h264dec.c.
The che_configure function in libavcodec/aacdec_template.c in FFmpeg before 3.2.1 allows remote attackers to cause a denial of service (allocation of huge memory, and being killed by the OS) via a crafted MOV file.