America's Army (aka AA or Army Game Project) 2.8.3.1 and earlier allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a crafted UDP packet, probably involving a VoiceIndex value that is outside of the range specified by VOICE_MAX_CHATTERS.
https://exchange.xforce.ibmcloud.com/vulnerabilities/44152
http://www.securityfocus.com/bid/30519
http://www.securityfocus.com/archive/1/495061/100/0/threaded