An issue was discovered in certain Apple products. iOS before 10.3.3 is affected. macOS before 10.12.6 is affected. tvOS before 10.2.2 is affected. The issue involves the "CoreAudio" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted movie file.
https://support.apple.com/HT207924
https://support.apple.com/HT207923
https://support.apple.com/HT207922