# CVE-2018-7837: XML external entity in IIoT Monitor 3.1.38

> An XXE vulnerability in Schneider Electric IIoT Monitor allows attackers to expose restricted information by resolving external XML entities.

- **Severity:** High 7.5 (`CVSS:3.0/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:** 24 Dec 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-j8vf-v36p-7qjw

## What is CVE-2018-7837?

CVE-2018-7837 is a high-severity vulnerability in Schneider Electric SE IIoT Monitor 3.1.38, published on 24 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An Improper Restriction of XML External Entity Reference ('XXE') vulnerability exists on numerous methods of the IIoT Monitor 3.1.38 software that could allow the software to resolve documents outside of the intended sphere of control, causing the software to embed incorrect documents into its output and expose restricted information.

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2018-7837?

It affects 1 product.


Products: Schneider-Electric Iiot Monior.

## How do I fix CVE-2018-7837?

No fix has been published for CVE-2018-7837 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-7837 being exploited?

There is no known exploitation of CVE-2018-7837 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric SE IIoT Monitor 3.1.38

- [CVE-2018-7835](https://insights.sbomify.com/CVE-2018-7835/): Path traversal in IIoT Monitor 3.1.38 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-7837 and fix it if it is affected.

What it is: CVE-2018-7837 is a high-severity vulnerability in Schneider Electric SE IIoT Monitor 3.1.38, published on 24 Dec 2018. 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-2018-7837 in the wild and no public exploit code.

Affected product: Schneider Electric SE IIoT Monitor 3.1.38. 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-2018-7837/ (Markdown: https://insights.sbomify.com/CVE-2018-7837/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-7837
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-7837
- OSV: https://osv.dev/vulnerability/CVE-2018-7837

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-7837/
Summaries are generated and may contain mistakes; the official description above is the record.