Telenia Software TVox 26.5.3 and prior 26.x versions, and 24.9.21 and prior 24.x versions, contain a privilege escalation vulnerability that allows attackers with access to the apache account to execute arbitrary commands as root by exploiting an insecure sudoers configuration in /etc/sudoers.d/telenia. The configuration grants the apache user NOPASSWD execution of /bin/nice, which can be leveraged to invoke arbitrary commands, enabling full root-level command execution without supplying a password.

Telenia Software TVox 26.5.3 and prior 26.x versions, and 24.9.21 and prior 24.x versions, contain an OS command injection vulnerability in actionaudio.php that allows authenticated attackers to execute arbitrary operating system commands by passing an unsanitized pid parameter into an exec() call when the action parameter is set to checkProcess. Attackers can inject malicious OS commands through the pid request parameter to execute arbitrary commands with the privileges of the apache user.

Telenia Software TVox 26.5.3 and prior 26.x versions, and 24.9.21 and prior 24.x versions, contain an authentication bypass vulnerability in setenv.php where the redirectToLoginAdminIRequestHaveAccessToken() function derives the current page name from PHPSELF and skips authentication when the value matches 'loginadmin.php'. Attackers can append '/loginadmin.php' to the path of any target PHP script to cause the authentication check to pass and gain unauthenticated access to all PHP scripts under the manager HTML directory.