CVEvulnerability

CVE-2026-34021

8.6 HIGH Published 2026-06-15 Modified 2026-10-25 Official page ↗
Status
Deferred
Published
2026-06-15
Last modified
2026-10-25
Assigner
551230f0-3615-47bd-b7cc-93e92e730bbf
CVSS 4.0 (551230f0-3615-47bd-b7cc-93e92e730bbf)
8.6 HIGH — CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weaknesses
CWE-294

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

Weakness · CWE (1)

  • CWE-294 Authentication Bypass by Capture-replay weakness

References