The parse_command function in Genecys 0.2 and earlier allows remote attackers to cause a denial of service (crash) via a command with a missing ":" (colon) separator, which triggers a null dereference.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26523
http://www.vupen.com/english/advisories/2006/1815
http://www.securityfocus.com/bid/17969
http://www.securityfocus.com/archive/1/433929/30/5010/threaded