Multiple format string vulnerabilities in plugins in VideoLAN VLC Media Player before 0.8.6c allow remote attackers to cause a denial of service (crash) or execute arbitrary code via format string specifiers in (1) an Ogg/Vorbis file, (2) an Ogg/Theora file, (3) a CDDB entry for a CD Digital Audio (CDDA) file, or (4) Service Announce Protocol (SAP) multicast packets.