In ZGR TPS200 NG 2.00 firmware version and 1.01 hardware version, the firmware upload process does not perform any type of restriction. This allows an attacker to modify it and re-upload it via web with malicious modifications, rendering the device unusable.
https://www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-zgr-tps200-ng