Buffer overflow in the Display Names message feature in Cerulean Studios Trillian Basic and Pro 3.1.9.0 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a long nickname in an MSN protocol message.
http://www.vupen.com/english/advisories/2008/1368/references
http://www.securityfocus.com/bid/28925
http://www.securityfocus.com/archive/1/491281/100/0/threaded