An issue was discovered in Servisnet Tessa 0.0.2. An attacker can obtain sensitive information via a /js/app.js request.
https://www.exploit-db.com/exploits/50713
https://pentest.com.tr/exploits/Servisnet-Tessa-MQTT-Credentials-Dump-Unauthenticated.html
http://www.servisnet.com.tr/en/page/products
http://packetstormsecurity.com/files/165867/Servisnet-Tessa-MQTT-Credential-Disclosure.html