CVE 2016-7663

An issue was discovered in certain Apple products. iOS before 10.2 is affected. macOS before 10.12.2 is affected. watchOS before 3.1.3 is affected. The issue involves the "CoreFoundation" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted string.

See the CVE page on Mitre.org for more details.