An issue was discovered in certain Apple products. iOS before 10 is affected. Safari before 10 is affected. iTunes before 12.5.1 is affected. tvOS before 10 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.
https://support.apple.com/HT207158
https://support.apple.com/HT207157
https://support.apple.com/HT207143