Zoidcom 0.6.7 and earlier allows remote attackers to cause a denial of service (application crash) via a JOIN packet (aka connection packet) containing 0x69 in the ninth byte, which triggers a "double-delete" of trace data, a different vulnerability than CVE-2005-1643.
https://exchange.xforce.ibmcloud.com/vulnerabilities/36018
http://www.securityfocus.com/archive/1/476523/100/0/threaded
http://securityreason.com/securityalert/3014
http://secunia.com/advisories/26451