PT-2026-49192 · Wertheim Gmbh · Wertheim Safecontroller 5400 Hardware For Vault Rooms

Published 2026-06-15 · Updated 2026-06-15 · CVE-2026-34021

NVD

CVSS v4.0

8.6

High

Base vector

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

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.

Fix

Weakness Enumeration

CWE-294

Related Identifiers

CVE-2026-34021

Affected Products

Wertheim Safecontroller 5400 Hardware For Vault Rooms

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-34021 · Security Note
• https://r.sec-consult.com/wertdev · Note
• https://wertheim-safes.com/safe-deposit-boxes · Note