Electrolink transmitters store credentials in clear-text. Use of these credentials could allow an attacker to access the system.

The application suffers from a privilege escalation vulnerability. An attacker logged in as guest can escalate his privileges by poisoning the cookie to become administrator.

The device allows an unauthenticated attacker to bypass authentication and modify the cookie to reveal hidden pages that allows more critical operations to the transmitter.

An unauthenticated attacker can reset the board and stop transmitter operations by sending a specially-crafted GET request to the command.cgi gateway, resulting in a denial-of-service scenario.

The devices allow access to an unprotected endpoint that allows MPFS file system binary image upload without authentication. The MPFS2 file system module provides a light-weight read-only file system that can be stored in external EEPROM, external serial flash, or internal flash program memory. This file system serves as the basis for the HTTP2 web server module, but is also used by the SNMP module and is available to other applications that require basic read-only storage capabilities. This can be exploited to overwrite the flash program memory that holds the web server's main interfaces and execute arbitrary code.

Electrolink transmitters are vulnerable to an authentication bypass vulnerability affecting the login cookie. An attacker can set an arbitrary value except 'NO' to the login cookie and have full system access.

The application is vulnerable to an unauthenticated parameter manipulation that allows an attacker to set the credentials to blank giving her access to the admin panel. Also vulnerable to account takeover and arbitrary password change.