Executive Summary

CVE-2026-34022 affects the Wertheim SafeController Family 65000, specifically version AssemblyVersion 6.11.8130.22319. The vulnerability arises because the system uses weak, custom cryptographic algorithms with hard-coded cryptographic keys to protect communication.

An attacker positioned as a man-in-the-middle can intercept and decrypt the data traffic between the SafeController and connected devices. It is possible to break the encryption and decrypt messages without knowing the encryption key, or to discover the key by intercepting enough messages.

No fix is available due to missing hardware support. Workarounds include physically isolating devices, hardening connected systems, enforcing strong authentication, and restricting access to authorized personnel.

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Impact Analysis

This vulnerability allows an attacker in an adversary-in-the-middle position to intercept and decrypt sensitive communication between the SafeController and connected devices.

As a result, confidential data could be exposed, potentially compromising the security of the safe deposit locker system.

Since no patch is available, the risk remains until mitigated by physical isolation, system hardening, strong authentication, and restricted access.

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Detection Guidance

The vulnerability involves weak custom cryptographic algorithms with hard-coded keys used by the Wertheim SafeController Family 65000, allowing an attacker in a man-in-the-middle position to decrypt communication traffic.

Detection would involve monitoring network traffic between the SafeController devices and connected systems for unencrypted or weakly encrypted data streams that can be intercepted and decrypted.

Since the encryption can be broken without knowledge of the key, commands that capture and analyze network traffic such as using Wireshark or tcpdump to capture packets on the relevant network segment could be used.

• Use tcpdump to capture traffic: tcpdump -i <interface> host <SafeController IP>
• Use Wireshark to analyze captured packets for weak or custom encryption patterns.
• Look for repeated patterns or static keys in the encrypted payloads indicating hard-coded keys.

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Mitigation Strategies

No fix or patch is available for this vulnerability due to missing hardware support.

Immediate mitigation steps include physically isolating the affected devices from untrusted networks to prevent interception.

Harden connected systems by enforcing strong authentication and restricting access to authorized personnel only.

Limit network exposure of the SafeController devices and monitor for any suspicious activity.

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Compliance Impact

The vulnerability in the Wertheim SafeController Family 65000 involves weak custom cryptographic algorithms with hard-coded keys, allowing an attacker in a man-in-the-middle position to decrypt data traffic. This insufficient transport layer encryption compromises the confidentiality and integrity of the data transmitted.

Such weaknesses can negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require strong protection of sensitive data in transit to prevent unauthorized access and data breaches.

Since the vendor has confirmed no fix is possible due to missing hardware support, organizations using this system must rely on physical isolation, system hardening, strong authentication, and strict access controls as mitigations to reduce compliance risks.

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