Heap-based buffer overflow in Adobe Flash Player 12.0.0.77 allows remote attackers to execute arbitrary code and bypass a sandbox protection mechanism via unspecified vectors, as demonstrated by Zeguang Zhao and Liang Chen during a Pwn2Own competition at CanSecWest 2014.
http://www.securityfocus.com/bid/66241
http://www.pwn2own.com/2014/03/pwn2own-results-thursday-day-two/
http://twitter.com/thezdi/statuses/444262022444621824
http://security.gentoo.org/glsa/glsa-201406-08.xml
http://rhn.redhat.com/errata/RHSA-2014-0496.html
http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00008.html
http://helpx.adobe.com/security/products/flash-player/apsb14-14.html