An issue was discovered in certain Apple products. iOS before 10.3 is affected. Safari before 10.1 is affected. tvOS before 10.2 is affected. watchOS before 3.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code by leveraging an unspecified "type confusion."
https://support.apple.com/HT207617
https://support.apple.com/HT207602
https://support.apple.com/HT207601
https://support.apple.com/HT207600
https://security.gentoo.org/glsa/201706-15