# CVE-2014-0769: Festo CECX-X-(C1/M1) Controller Improper Authentication

> Remote attackers can modify controller configuration or delete logs without authentication due to missing checks on specific TCP ports.

- **Severity:** Critical 9.3 (`AV:N/AC:M/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Apr 2014
- **Updated:** 2 Jul 2025
- **Also known as:** GHSA-q52x-cg29-xrxr

## What is CVE-2014-0769?

CVE-2014-0769 is a critical authentication bypass vulnerability in Festo CECX-X-C1 Modular Master Controller with CoDeSys, published on 25 Apr 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Festo CECX-X-C1 Modular Master Controller with CoDeSys and CECX-X-M1 Modular Controller with CoDeSys and SoftMotion do not require authentication for connections to certain TCP ports, which allows remote attackers to (1) modify the configuration via a request to the debug service on port 4000 or (2) delete log entries via a request to the log service on port 4001.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2014-0769?

It affects 4 products.


Products: 3s-Software Codesys Runtime System, Festo Cecx-X-C1 Modular Master Controller, Festo Cecx-X-M1 Modular Controller, Softmotion3d Softmotion.

## How do I fix CVE-2014-0769?

No fix has been published for CVE-2014-0769 yet. Limit exposure of the affected software until one is available.

## Is CVE-2014-0769 being exploited?

There is no known exploitation of CVE-2014-0769 in the wild and no public exploit code.

## Other vulnerabilities in Festo CECX-X-C1 Modular Master Controller with CoDeSys

- [CVE-2012-6069](https://insights.sbomify.com/CVE-2012-6069/): 3S CoDeSys Relative Path Traversal (critical 10.0)
- [CVE-2018-5440](https://insights.sbomify.com/CVE-2018-5440/): Memory corruption in 3S-Smart Software Solutions GmbH CODESYS Web Server (critical 9.8)
- [CVE-2012-6068](https://insights.sbomify.com/CVE-2012-6068/): 3S CoDeSys Improper Access Control (critical 9.8)
- [CVE-2014-0760](https://insights.sbomify.com/CVE-2014-0760/): Festo CECX-X-(C1/M1) Controller Improper Authentication (critical 9.3)
- [CVE-2015-6482](https://insights.sbomify.com/CVE-2015-6482/): Null dereference in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2014-0769 and fix it if it is affected.

What it is: CVE-2014-0769 is a critical authentication bypass vulnerability in Festo CECX-X-C1 Modular Master Controller with CoDeSys, published on 25 Apr 2014. 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-2014-0769 in the wild and no public exploit code.

Affected product: Festo CECX-X-C1 Modular Master Controller with CoDeSys. 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-2014-0769/ (Markdown: https://insights.sbomify.com/CVE-2014-0769/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2014-0769
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2014-0769
- OSV: https://osv.dev/vulnerability/CVE-2014-0769

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From sbomify Insights: https://insights.sbomify.com/CVE-2014-0769/
Summaries are generated and may contain mistakes; the official description above is the record.