edituser.php in TTS Time Tracking Software 3.0 does not verify that the name and password are correct, which allows remote attackers to overwrite arbitrary data belonging to any account.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24570
http://www.vupen.com/english/advisories/2006/0524
http://www.securityfocus.com/bid/16731
http://www.securityfocus.com/bid/16630
http://www.securityfocus.com/archive/1/425505/100/0/threaded