source: https://www.securityfocus.com/bid/47762/info

TCExam is prone to multiple SQL-injection vulnerabilities because it 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.

TCExam 11.1.029 is vulnerable; other versions may also be affected. 

http://www.example.com/tcexam/admin/code/tce_xml_user_results.php?lang=&user_id=1&startdate=[SQL]&enddate=[SQL]&order_field=[SQL]