# CVE-2024-27121: Path traversal in Machine Automation Controller NJ Series

> Remote attackers with administrative privileges can access arbitrary files or execute code via path traversal in OMRON Machine Automation Controllers.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Mar 2024
- **Updated:** 16 Aug 2024
- **Also known as:** GHSA-m2f4-hwvj-h9rj

## What is CVE-2024-27121?

CVE-2024-27121 is a high-severity path traversal vulnerability in OMRON Corporation Machine Automation Controller NJ Series , published on 12 Mar 2024. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Path traversal vulnerability exists in Machine Automation Controller NJ Series and Machine Automation Controller NX Series. An arbitrary file in the affected product may be accessed or arbitrary code may be executed by processing a specially crafted request sent from a remote attacker with an administrative privilege. As for the details of the affected product names/versions, see the information provided by the vendor under [References] section.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2024-27121?


## How do I fix CVE-2024-27121?

No fix has been published for CVE-2024-27121 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-27121 being exploited?

There is no known exploitation of CVE-2024-27121 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-27121 and fix it if it is affected.

What it is: CVE-2024-27121 is a high-severity path traversal vulnerability in OMRON Corporation Machine Automation Controller NJ Series , published on 12 Mar 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-27121 in the wild and no public exploit code.

Affected product: OMRON Corporation Machine Automation Controller NJ Series . 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-2024-27121/ (Markdown: https://insights.sbomify.com/CVE-2024-27121/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-27121
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-27121
- OSV: https://osv.dev/vulnerability/CVE-2024-27121

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From sbomify Insights: https://insights.sbomify.com/CVE-2024-27121/
Summaries are generated and may contain mistakes; the official description above is the record.