WindowServer in Apple OS X before 10.12 allows local users to obtain root access via vectors that leverage "type confusion," a different vulnerability than CVE-2016-4709.
https://support.apple.com/HT207170
http://www.zerodayinitiative.com/advisories/ZDI-16-608
http://www.securitytracker.com/id/1036858
http://www.securityfocus.com/bid/93055
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html