CVE-2016-4658
xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory corruption) via a crafted XML document.
Date published : 2016-09-25
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html