STW (aka Sensor-Technik Wiedemann) TCG-4 Connectivity Module DeploymentPackage_v3.03r0-Impala and DeploymentPackage_v3.04r2-Jellyfish and TCG-4lite Connectivity Module DeploymentPackage_v3.04r2-Jellyfish allow an attacker to gain full remote access with root privileges without the need for authentication, giving an attacker arbitrary remote code execution over LTE / 4G network via SMS.