Vulnerability Description
The Wertheim SafeController 5400, Controller 5400 - AssemblyVersion 6.11.8130.22320, uses RS-485 communication between the server and the microcontroller without cryptographic protection. An attacker with access to the communication path between the server and the microcontroller can sniff RS-485 messages and replay previously observed messages. This can be used, for example, to spoof a "quit alarm" message and continuously deactivate the safe alarm.
Related Weaknesses (CWE)
References
- https://r.sec-consult.com/wertdev
- https://wertheim-safes.com/safe-deposit-boxes/
- https://sec-consult.com/vulnerability-lab/advisory/multiple-vulnerabilities-in-w
FAQ
What is CVE-2026-34021?
CVE-2026-34021 is a documented vulnerability. The Wertheim SafeController 5400, Controller 5400 - AssemblyVersion 6.11.8130.22320, uses RS-485 communication between the server and the microcontroller without cryptographic protection. An attacker ...
How severe is CVE-2026-34021?
CVSS scoring is not yet available for CVE-2026-34021. Check NVD for updates.
Is there a patch for CVE-2026-34021?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.