# CVE-2024-6421: Pepperl+Fuchs: Incorrectly configured FTP-Server in OIT Products

> An unauthenticated remote attacker can read sensitive device information due to an incorrectly configured FTP service in Pepperl+Fuchs OIT products.

- **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:** 10 Jul 2024
- **Updated:** 22 Aug 2025
- **Also known as:** GHSA-x993-f873-7mgw

## What is CVE-2024-6421?

CVE-2024-6421 is a high-severity vulnerability in Pepperl+Fuchs OIT1500-F113-B12-CB, published on 10 Jul 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An unauthenticated remote attacker can read out sensitive device information through a incorrectly configured FTP service.

Weakness: CWE-552 (Files or Directories Accessible to External Parties)

## Which versions are affected by CVE-2024-6421?

It affects 4 products.


Products: Pepperl-Fuchs Oit1500-F113-B12-Cb Firmware, Pepperl-Fuchs Oit200-F113-B12-Cb Firmware, Pepperl-Fuchs Oit500-F113-B12-Cb Firmware, Pepperl-Fuchs Oit700-F113-B12-Cb Firmware.

## How do I fix CVE-2024-6421?

No fix has been published for CVE-2024-6421 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-6421 being exploited?

There is no known exploitation of CVE-2024-6421 in the wild and no public exploit code.

## Other vulnerabilities in Pepperl+Fuchs OIT1500-F113-B12-CB

- [CVE-2024-6422](https://insights.sbomify.com/CVE-2024-6422/): Pepperl+Fuchs: OIT Products can be manipulated via unintended Telnet access (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-6421 and fix it if it is affected.

What it is: CVE-2024-6421 is a high-severity vulnerability in Pepperl+Fuchs OIT1500-F113-B12-CB, published on 10 Jul 2024. 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-2024-6421 in the wild and no public exploit code.

Affected product: Pepperl+Fuchs OIT1500-F113-B12-CB. 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-2024-6421/ (Markdown: https://insights.sbomify.com/CVE-2024-6421/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-6421
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-6421
- OSV: https://osv.dev/vulnerability/CVE-2024-6421

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-6421/
Summaries are generated and may contain mistakes; the official description above is the record.