# CVE-2025-3092: MB connect line: Observable response discrepancy in mbCONNECT24/mymbCONNECT24

> An unauthenticated remote attacker can enumerate valid usernames via an unprotected endpoint in mbCONNECT24 systems.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Jun 2025
- **Updated:** 24 Jun 2025
- **Also known as:** GHSA-w2r4-cm6p-7h86

## What is CVE-2025-3092?

CVE-2025-3092 is a high-severity vulnerability in Helmholz mbCONNECT24, published on 24 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An unauthenticated remote attacker can enumerate valid user names from an unprotected endpoint.

Weakness: CWE-204 (Observable Response Discrepancy)

## Which versions are affected by CVE-2025-3092?


## How do I fix CVE-2025-3092?

No fix has been published for CVE-2025-3092 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-3092 being exploited?

There is no known exploitation of CVE-2025-3092 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-3092 and fix it if it is affected.

What it is: CVE-2025-3092 is a high-severity vulnerability in Helmholz mbCONNECT24, published on 24 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-3092 in the wild and no public exploit code.

Affected product: Helmholz mbCONNECT24. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-3092/ (Markdown: https://insights.sbomify.com/CVE-2025-3092/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-3092
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-3092
- OSV: https://osv.dev/vulnerability/CVE-2025-3092

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-3092/
Summaries are generated and may contain mistakes; the official description above is the record.