Unspecified vulnerability in Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code with medium-integrity privileges and bypass a sandbox protection mechanism via unknown vectors, as demonstrated by ZDI during a Pwn4Fun competition at CanSecWest 2014.
http://www.securitytracker.com/id/1030370
http://www.securityfocus.com/bid/67511
http://www.pwn2own.com/2014/03/pwn2own-results-for-wednesday-day-one/
http://twitter.com/thezdi/statuses/443810610958958592