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High VDE-2020-004 2 CVEs

WAGO: e!Cockpit cleartext communication and hardcoded key

Published Mar 9, 2020 · Updated May 14, 2025 · Revision 3

Vendor: WAGO Product: 750-81xx/xxx-xxx Product: 750-82xx/xxx-xxx Product: 762-4xxx Product: 762-5xxx Product: 762-6xxx

Summary

The communication between e!Cockpit and the programmable logic controller is not encrypted. The broken cryptographic algorithm allows an attacker to decode the password for the e!Cockpit communication and with this to manipulate the application.

The password used by e!Cockpit for authentication against the PLC is encrypted with a hard-coded key. An attacker is able to decrypt the password by listening to the network traffic.

Details

Impact
The vulnerabilities allow an attacker who has access to the network communication between e!Cockpit and the PLC to listen, manipulate, or drop any information they choose from the corresponding communication.

Mitigation
* Follow the instructions in WAGO's handbook Cyber Security for Controller
* Restrict network access to the device.
* Do not directly connect the device to the internet
* Use an encrypted VPN connection to the device
* Disable unused TCP/UDP-ports

Typically the e!Cockpit communication is only needed during commissioning of the programmable logic controller and not during normal operations. WAGO highly recommends disabling the TCP Port 11740 and UDP Port 1740 after commissioning or using an encrypted VPN connection to the device.

Vulnerabilities 2

Revision history

  1. #3

    Fix: added distribution

  2. #2

    Fixed namespace URL

  3. #1

    initial revision

References