# CVE-2017-7907: XML external entity in Schneider Electric Wonderware Historian Client

> An XXE vulnerability in Schneider Electric Wonderware Historian Client allows attackers to cause denial of service or disclose server file contents.

- **Severity:** Medium 6.6 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 May 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-hvqh-vmw8-vhgv

## What is CVE-2017-7907?

CVE-2017-7907 is a medium-severity vulnerability in Schneider Electric Wonderware Historian Client, published on 19 May 2017. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

An Improper XML Parser Configuration issue was discovered in Schneider Electric Wonderware Historian Client 2014 R2 SP1 and prior. An improperly restricted XML parser (with improper restriction of XML external entity reference, or XXE) may allow an attacker to enter malicious input through the application which could cause a denial of service or disclose file contents from a server or connected network.

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

## Which versions are affected by CVE-2017-7907?

It affects 1 product.


Products: Schneider-Electric Wonderware Historian Client.

## How do I fix CVE-2017-7907?

No fix has been published for CVE-2017-7907 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-7907 being exploited?

There is no known exploitation of CVE-2017-7907 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-7907 and fix it if it is affected.

What it is: CVE-2017-7907 is a medium-severity vulnerability in Schneider Electric Wonderware Historian Client, published on 19 May 2017. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2017-7907 in the wild and no public exploit code.

Affected product: Schneider Electric Wonderware Historian Client. 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-2017-7907/ (Markdown: https://insights.sbomify.com/CVE-2017-7907/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-7907
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-7907
- OSV: https://osv.dev/vulnerability/CVE-2017-7907

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-7907/
Summaries are generated and may contain mistakes; the official description above is the record.