AMTT Hotel Broadband Operation System online_status.php sql injection

A vulnerability was found in AMTT Hotel Broadband Operation System up to 3.0.3.151204. It has been classified as critical. Affected is an unknown function of the file /manager/frontdesk/online_status.php. The manipulation of the argument AccountID leads to sql injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.