Open System Consultants (OSC) Radiator before 4.0 allows remote attackers to cause a denial of service (daemon crash) via malformed RADIUS requests, as demonstrated by packets sent by nmap.
https://exchange.xforce.ibmcloud.com/vulnerabilities/40664
https://exchange.xforce.ibmcloud.com/vulnerabilities/39730
http://www.vupen.com/english/advisories/2008/0598
http://www.securityfocus.com/bid/27306