Siemens SIMATIC HMI Vulnerability in Unified Panels
🔒 Siemens reports that SIMATIC HMI Unified Comfort Panels before V21.0 are vulnerable to an unauthenticated access issue that exposes the embedded web browser via the Control Panel help link when access protections are not applied. The flaw is attributed to insecure default initialization (CWE-1188) and carries a vendor CVSS v3 score of 7.7. Siemens recommends updating affected panels to V21 or later, disabling the taskbar, and following operational security guidance to enable Control Panel access protection and change runtime autostart settings.
