VULNERABILITY INTELLIGENCE
CVE-2026-34021
EPSS probability0.20%
CISA KEVNot currently listed
Published2026-06-15
Last modified2026-10-25
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.
Weakness classification
- 551230f0-3615-47bd-b7cc-93e92e730bbf: CWE-294