source: http://www.securityfocus.com/bid/30340/info

ZDaemon is prone to a remote denial-of-service vulnerability because the application fails to handle NULL-pointer exceptions.

An attacker could exploit this issue to crash the affected application, denying service to legitimate users.

This issue affects ZDaemon 1.08.07 and earlier versions.

http://www.exploit-db.com/sploits/32104.zip