Apple QuickTime before 7.7.8 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted file, a different vulnerability than CVE-2015-5786.
https://support.apple.com/HT205046
https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-5731
http://www.securitytracker.com/id/1033346
http://lists.apple.com/archives/security-announce/2015/Aug/msg00004.html