RUGGEDCOM ROS TLS Certificate Upload Vulnerability
⚠️ Siemens reports a temporary denial-of-service vulnerability in RUGGEDCOM ROS devices that can be triggered via the TLS certificate upload process. Authenticated remote attackers may upload malformed certificate data to cause a crash and an automatic reboot (CVE-2025-40935, CWE-20), producing a brief availability outage. Siemens has published fixed firmware; update affected systems to V5.10.1 or later. CISA advises isolating control networks, minimizing internet exposure, using secure remote access, and performing impact analysis before applying mitigations.
