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CVE-2026-34023: Broken WebSocket authorization in Wertheim SafeController Software allows cross-branch access to restricted functions

• Severity: high (CVSS 7.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-15 · updated 2026-10-25
• Weakness: CWE-863

Description

The Wertheim SafeController Software, AssemblyVersion 6.15.8328.28014, contains an incorrect authorization vulnerability in the WebSocket communication used by the SafeController WebMessageBroker. An authenticated attacker with valid low-privileged branch user credentials can manipulate WebSocket messages by specifying controller identifiers belonging to other branches. This allows the attacker to access restricted functions and resources in other branches, including activating boxes outside of the user's authorized branch.

Affected products

• Wertheim GmbH Wertheim SafeController Software for VAULT ROOMS (Safe Deposit Locker System): Wertheim SafeController Software, AssemblyVersion 6.15.8328.28014

References

• https://r.sec-consult.com/wertheim
• https://wertheim-safes.com/safe-deposit-box-management/
• https://sec-consult.com/vulnerability-lab/advisory/multiple-critical-vulnerabilities-in-wertheim-safecontroller-software-for-vault-rooms-safe-deposit-locker-system/

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