CVE-2026-34021

HIGH EPSS 9.5%
Published Jun 15, 20262w ago · Modified Jun 17, 20262w ago
8.6 CVSS 4.0
High
Find Similar
Published Jun 15, 2026 2w ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.6
Exploitability
—
Impact
—
Vector string
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
Attack Vector Adjacent
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
9.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-294

References 3

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.