# CVE-2025-41733: Possible malfunction credential injection

> Unauthenticated attackers can set root credentials via the commissioning wizard on uninitialized devices, leading to full device takeover.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Nov 2025
- **Updated:** 18 Nov 2025
- **Also known as:** GHSA-rg84-wv55-qxqc

## What is CVE-2025-41733?

CVE-2025-41733 is a critical authentication bypass vulnerability in METZ CONNECT Energy-Controlling EWIO2-M, published on 18 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The commissioning wizard on the affected devices does not validate if the device is already initialized. An unauthenticated remote attacker can construct POST requests to set root credentials.

Weakness: CWE-305 (Authentication Bypass by Primary Weakness)

## Which versions are affected by CVE-2025-41733?

It affects 3 products.


Products: Metz-Connect Ewio2-Bm Firmware, Metz-Connect Ewio2-M-Bm Firmware, Metz-Connect Ewio2-M Firmware.

## How do I fix CVE-2025-41733?

No fix has been published for CVE-2025-41733 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-41733 being exploited?

There is no known exploitation of CVE-2025-41733 in the wild and no public exploit code.

## Other vulnerabilities in METZ CONNECT Energy-Controlling EWIO2-M

- [CVE-2025-41734](https://insights.sbomify.com/CVE-2025-41734/): Unauthenticated Local File Inclusion in php module (critical 9.8)
- [CVE-2025-41735](https://insights.sbomify.com/CVE-2025-41735/): Possible arbitrary file upload (high 8.8)
- [CVE-2025-41736](https://insights.sbomify.com/CVE-2025-41736/): Possible arbitrary code execution (high 8.8)
- [CVE-2025-41737](https://insights.sbomify.com/CVE-2025-41737/): Improper access control via php endpoint (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-41733 and fix it if it is affected.

What it is: CVE-2025-41733 is a critical authentication bypass vulnerability in METZ CONNECT Energy-Controlling EWIO2-M, published on 18 Nov 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-2025-41733 in the wild and no public exploit code.

Affected product: METZ CONNECT Energy-Controlling EWIO2-M. 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-2025-41733/ (Markdown: https://insights.sbomify.com/CVE-2025-41733/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-41733
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-41733
- OSV: https://osv.dev/vulnerability/CVE-2025-41733

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-41733/
Summaries are generated and may contain mistakes; the official description above is the record.