Thinkware U3000 TCP Service wpa_supplicant.conf get_file access control

A vulnerability was identified in Thinkware U3000 up to 1.02.04. Affected is the function get_file of the file /tmp/wpa_supplicant.conf of the component TCP Service. The manipulation leads to improper access controls. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.