Multiple Siemens products vulnerable to encryption issues

Siemens SIMATIC WinCC is an automated data acquisition and monitoring (SCADA) system, Siemens SIMATIC HMI Comfort Panels is a touch panel device, Siemens SIMATIC HMI Comfort Outdoor Panels is a touch panel device for outdoor use, and Siemens SIMATIC HMI Comfort Outdoor Panels is a touch panel device for outdoor use. SIMATIC HMI Comfort Outdoor Panels are touch panel devices designed for outdoor use. A security vulnerability exists in several Siemens products. An attacker could use the vulnerability to obtain TLS session keys and decrypt TLS traffic, which in turn could affect the confidentiality of communications between the device and legitimate users.