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Wertheim GmbH Wertheim SafeController 5400 Hardware for VAULT ROOMS (Safe Deposit Locker System - Microcontroller) vulnerabilities

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Published CVEs affecting Wertheim GmbH Wertheim SafeController 5400 Hardware for VAULT ROOMS (Safe Deposit Locker System - Microcontroller): 1 record(s), with affected versions and fixes.

CVE-2026-34021 High · 8.6 CWE-294 Jun 15, 2026
Lack of cryptographic protection in Wertheim SafeController 5400 enables RS-485 message sniffing and replay
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.