libxslt in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.
lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
lists.apple.com/archives/security-announce/2016/Sep/msg00010.html
lists.apple.com/archives/security-announce/2016/Sep/msg00011.html
www.debian.org/security/2016/dsa-3709
www.securityfocus.com/bid/93054
www.securitytracker.com/id/1036858
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SK4YNISS22MJY22YX5I6V2U63QZAUEHA/
support.apple.com/HT207141
support.apple.com/HT207142
support.apple.com/HT207143
support.apple.com/HT207170