# CVE-2022-45140: WAGO: Missing Authentication for Critical Function

> Unauthenticated attackers can write arbitrary data with root privileges to the storage, leading to remote code execution and full system compromise.

- **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:** 27 Feb 2023
- **Updated:** 10 Mar 2025
- **Also known as:** GHSA-4p8v-g44f-p8hp

## What is CVE-2022-45140?

CVE-2022-45140 is a critical missing authorization vulnerability in WAGO Compact Controller CC100 (751-9301), published on 27 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The configuration backend allows an unauthenticated user to write arbitrary data with root privileges to the storage, which could lead to unauthenticated remote code execution and full system compromise.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2022-45140?

It affects 7 products.


Products: Wago 751-9301 Firmware, Wago 752-8303\/8000-002 Firmware, Wago Pfc100 Firmware, Wago Pfc200 Firmware, Wago Touch Panel 600 Advanced Firmware, Wago Touch Panel 600 Marine Firmware, Wago Touch Panel 600 Standard Firmware.

## How do I fix CVE-2022-45140?

No fix has been published for CVE-2022-45140 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-45140 being exploited?

There is no known exploitation of CVE-2022-45140 in the wild and no public exploit code.

## Other vulnerabilities in WAGO Compact Controller CC100 (751-9301)

- [CVE-2022-45138](https://insights.sbomify.com/CVE-2022-45138/): WAGO: Missing Authentication for Critical Function (critical 9.8)
- [CVE-2022-45137](https://insights.sbomify.com/CVE-2022-45137/): WAGO: Reflective Cross-Site Scripting (medium 6.1)
- [CVE-2022-45139](https://insights.sbomify.com/CVE-2022-45139/): WAGO: Origin validation error through CORS misconfiguration (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-45140 and fix it if it is affected.

What it is: CVE-2022-45140 is a critical missing authorization vulnerability in WAGO Compact Controller CC100 (751-9301), published on 27 Feb 2023. 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-2022-45140 in the wild and no public exploit code.

Affected product: WAGO Compact Controller CC100 (751-9301). 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-2022-45140/ (Markdown: https://insights.sbomify.com/CVE-2022-45140/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-45140
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-45140
- OSV: https://osv.dev/vulnerability/CVE-2022-45140

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-45140/
Summaries are generated and may contain mistakes; the official description above is the record.