# CVE-2023-0985: Helmholz and MB Connect Line: Account takeover via password reset in multiple products

> Low-privilege users can reset passwords for any user in their account, enabling admin takeover and full account compromise in Helmholz and MB Connect Line devices.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Jun 2023
- **Updated:** 7 Jan 2025
- **Also known as:** GHSA-xrvf-m29v-829x

## What is CVE-2023-0985?

CVE-2023-0985 is a high-severity authentication bypass vulnerability in Helmholz mbCONNECT24, published on 6 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An Authorization Bypass vulnerability was found in MB Connect Lines mbCONNECT24, mymbCONNECT24 and Helmholz' myREX24 and myREX24.virtual version <= 2.13.3. An authenticated remote user with low privileges can change the password of any user in the same account. This allows to take over the admin user and therefore fully compromise the account.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2023-0985?

It affects 2 products.


Products: Mbconnectline Mbconnect24, Mbconnectline Mymbconnect24.

## How do I fix CVE-2023-0985?

No fix has been published for CVE-2023-0985 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-0985 being exploited?

There is no known exploitation of CVE-2023-0985 in the wild and no public exploit code.

## Other vulnerabilities in Helmholz mbCONNECT24

- [CVE-2020-35565](https://insights.sbomify.com/CVE-2020-35565/): Security feature bypass in n/a (critical 9.8)
- [CVE-2020-10383](https://insights.sbomify.com/CVE-2020-10383/): Code injection in n/a (critical 9.8)
- [CVE-2026-33615](https://insights.sbomify.com/CVE-2026-33615/): MB connect line mbCONNECT24 vulnerable to an unauthenticated SQL injection in the setinfo Endpoint (critical 9.1)
- [CVE-2020-10382](https://insights.sbomify.com/CVE-2020-10382/): Code injection in n/a (high 8.8)
- [CVE-2020-35567](https://insights.sbomify.com/CVE-2020-35567/): Hardcoded credentials in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-0985 and fix it if it is affected.

What it is: CVE-2023-0985 is a high-severity authentication bypass vulnerability in Helmholz mbCONNECT24, published on 6 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-0985 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-2023-0985/ (Markdown: https://insights.sbomify.com/CVE-2023-0985/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-0985
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-0985
- OSV: https://osv.dev/vulnerability/CVE-2023-0985

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-0985/
Summaries are generated and may contain mistakes; the official description above is the record.