source: https://www.securityfocus.com/bid/15683/info
 
NetClassifieds is prone to multiple SQL-injection vulnerabilities because the application fails to properly sanitize user-supplied input before using it in an SQL query.
 
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/ViewItem.php?ItemNum=[SQL]