# CVE-2018-7240: Command injection in Modicon Quantum

> Attackers can exploit an FTP command in Schneider Electric Modicon Quantum modules to execute arbitrary code or cause denial of service.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Apr 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-62m4-6p37-pc95

## What is CVE-2018-7240?

CVE-2018-7240 is a high-severity command injection vulnerability in Schneider Electric SE Modicon Quantum, published on 18 Apr 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability exists in Schneider Electric's Modicon Quantum in all versions of the communication modules which could allow arbitrary code execution. An FTP command used to upgrade the firmware of the module can be misused to cause a denial of service, or in extreme cases, to load a malicious firmware.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2018-7240?

It affects 13 products.


Products: Schneider-Electric 140cpu31110 Firmware, Schneider-Electric 140cpu31110c Firmware, Schneider-Electric 140cpu43412u Firmware, Schneider-Electric 140cpu43412uc Firmware, Schneider-Electric 140cpu65150 Firmware, Schneider-Electric 140cpu65150c Firmware, Schneider-Electric 140cpu65160 Firmware, Schneider-Electric 140cpu65160c Firmware, Schneider-Electric 140cpu65160s Firmware, Schneider-Electric 140cpu65260 Firmware, Schneider-Electric 140cpu65260c Firmware, Schneider-Electric 140cpu65860 Firmware, Schneider-Electric 140cpu65860c Firmware.

## How do I fix CVE-2018-7240?

No fix has been published for CVE-2018-7240 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-7240 being exploited?

There is no known exploitation of CVE-2018-7240 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric SE Modicon Quantum

- [CVE-2018-7241](https://insights.sbomify.com/CVE-2018-7241/): Hardcoded credentials in Modicon Premium, Modicon Quantum, Modicon M340, BMXNOR0200 (critical 9.8)
- [CVE-2018-7242](https://insights.sbomify.com/CVE-2018-7242/): Weak cryptography in Modicon Premium, Modicon Quantum, Modicon M340, BMXNOR0200 (critical 9.8)
- [CVE-2018-7760](https://insights.sbomify.com/CVE-2018-7760/): Auth bypass in Modicon M340, Modicon Premium, Modicon Quantum, BMXNOR0201 (critical 9.8)
- [CVE-2018-7761](https://insights.sbomify.com/CVE-2018-7761/): Code injection in Modicon M340, Modicon Premium, Modicon Quantum, BMXNOR0202 (critical 9.8)
- [CVE-2018-7759](https://insights.sbomify.com/CVE-2018-7759/): Memory corruption in Modicon M340, Modicon Premium, Modicon Quantum, BMXNOR0200 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-7240 and fix it if it is affected.

What it is: CVE-2018-7240 is a high-severity command injection vulnerability in Schneider Electric SE Modicon Quantum, published on 18 Apr 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-7240 in the wild and no public exploit code.

Affected product: Schneider Electric SE Modicon Quantum. 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-2018-7240/ (Markdown: https://insights.sbomify.com/CVE-2018-7240/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-7240
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-7240
- OSV: https://osv.dev/vulnerability/CVE-2018-7240

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-7240/
Summaries are generated and may contain mistakes; the official description above is the record.