CVE-2017-6868: Siemens SIMATIC CP 44x-1 Redundant Network Access Modules

High severity, CVSS 8.1. EPSS: 4.2% chance of exploitation in the next 30 days.

An Improper Authentication issue was discovered in Siemens SIMATIC CP 44x-1 RNA, all versions prior to 1.4.1. An unauthenticated remote attacker may be able to perform administrative actions on the Communication Process (CP) of the RNA series module, if network access to Port 102/TCP is available and the configuration file for the CP is stored on the RNA's CPU.

Affected products

• Siemens SIMATIC CP 44x-1 Redundant Network Access Modules: up to and including 1.4.0

Published 2017-07-07. Last modified 2026-06-17.