Moxa MXView 2.8 allows remote attackers to read web server's private key file, no access control.
https://www.exploit-db.com/exploits/41850/
http://seclists.org/fulldisclosure/2017/Apr/49
http://packetstormsecurity.com/files/142074/Moxa-MXview-2.8-Private-Key-Disclosure.html
http://hyp3rlinx.altervista.org/advisories/MOXA-MXVIEW-v2.8-REMOTE-PRIVATE-KEY-DISCLOSURE.txt