CVE-2026-34021

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.

CVSS

No CVSS.

References

Link	Resource
https://r.sec-consult.com/wertdev
https://wertheim-safes.com/safe-deposit-boxes/
https://sec-consult.com/vulnerability-lab/advisory/multiple-vulnerabilities-in-wertheim-safecontroller-hardware-for-vault-rooms-safe-deposit-locker-system-microcontroller/

Configurations

No configuration.

History

15 Jun 2026, 14:16

Type	Values Removed	Values Added
References		() https://sec-consult.com/vulnerability-lab/advisory/multiple-vulnerabilities-in-wertheim-safecontroller-hardware-for-vault-rooms-safe-deposit-locker-system-microcontroller/ -

15 Jun 2026, 12:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-15 12:16

Updated : 2026-06-17 10:38

NVD link : CVE-2026-34021

Mitre link : CVE-2026-34021

CVE.ORG link : CVE-2026-34021

JSON object : View

Products Affected

No product.

CWE

CWE-294

Authentication Bypass by Capture-replay

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