The remote host is running a web application that is vulnerable to a SQL-injection attack.
The remote host is running Zabbix, an IT monitoring service. The installed version of Zabbix is earlier than 1.8.2. Such versions are potentially affected by a SQL-injection vulnerability in the 'user' parameter of the 'api.jsonrpc.php' script. A remote, unauthenticated attacker could exploit this flaw to gain control of the affected application.
Upgrade to Zabbix 1.8.2 or later.