The leetnet functions (leetnet/rudp.cpp) in Outgun 1.0.3 bot 2 and earlier allow remote attackers to cause a denial of service (game interruption) via large packets, which cause an exception to be thrown.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26511
http://www.vupen.com/english/advisories/2006/1796
http://www.securityfocus.com/archive/1/433932/100/0/threaded