# CVE-2025-10639: Usage of Hardcoded FTP Credentials EfficientLab WorkExaminer Professional

> Attackers can use hardcoded FTP credentials to read, modify data, and execute code as SYSTEM on the WorkExaminer Professional server.

- **Severity:** High 8.8 (`CVSS:3.1/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:** 21 Oct 2025
- **Updated:** 3 Nov 2025
- **Also known as:** GHSA-78gv-jfcm-9w8v

## What is CVE-2025-10639?

CVE-2025-10639 is a high-severity vulnerability in EfficientLab WorkExaminer Professional, published on 21 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The WorkExaminer Professional server installation comes with an FTP server that is used to receive the client logs on TCP port 12304. An attacker with network access to this port can use weak hardcoded credentials to login to the FTP server and modify or read data, log files and gain remote code execution as NT Authority\SYSTEM on the server by exchanging accessible service binaries in the WorkExaminer installation directory (e.g. "C:\Program File (x86)\Work Examiner Professional Server").

Weakness: CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2025-10639?


## How do I fix CVE-2025-10639?

No fix has been published for CVE-2025-10639 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-10639 being exploited?

There is no known exploitation of CVE-2025-10639 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-10639 and fix it if it is affected.

What it is: CVE-2025-10639 is a high-severity vulnerability in EfficientLab WorkExaminer Professional, published on 21 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-10639 in the wild and no public exploit code.

Affected product: EfficientLab WorkExaminer Professional. 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-2025-10639/ (Markdown: https://insights.sbomify.com/CVE-2025-10639/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-10639
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-10639
- OSV: https://osv.dev/vulnerability/CVE-2025-10639

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-10639/
Summaries are generated and may contain mistakes; the official description above is the record.