The in_mp4 plugin in Winamp before 5.6 allows remote attackers to cause a denial of service (application crash) via crafted (1) metadata or (2) albumart in an invalid MP4 file.
Winamp 5.666 and earlier allows remote attackers to cause a denial of service (memory corruption and crash) via a malformed .FLV file, related to f263.w5s.
Winamp 5.35 allows remote attackers to cause a denial of service (program stack overflow and application crash) via an M3U file that recursively includes itself.