Multiple stack-based buffer overflows in Yahoo! Messenger 11.5.0.228 and earlier allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via the (1) shortcut or (2) title keys in an emoticons.xml file.
https://hackerone.com/reports/10767
http://www.securitytracker.com/id/1033544
http://www.securityfocus.com/archive/1/536390/100/0/threaded
http://seclists.org/fulldisclosure/2015/Sep/24
http://packetstormsecurity.com/files/133443/Yahoo-Messenger-11.5.0.228-Buffer-Overflow.html