The remote host is vulnerable to a SQL injection attack.
The remote host is running the Vanilla Forum, a web forum. This version of Vanilla is vulnerable to a flaw in the way that it handles user-supplied data. Data passed to the 'CategoryID' parameter of the 'sortcategories.php' script can contain SQL queries that are ultimately run against the default database server. An attacker exploiting this flaw would be able to execute arbitrary SQL commands against the default database server.
Upgrade to version 1.1.4 or higher.