CVE-2005-2025

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

2.3% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2005-06-20 04:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:14 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 2.3% in the next 30 days (EPSS).
• Severity: 5.0 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2005-06-20 04:00 UTC

Last modified

2026-06-16 22:14 UTC

Exploit probability

2.3% · EPSS, next 30 days

Record status

Modified

Affected

• Cisco Vpn 3000 Concentrator
• Cisco Vpn 3015 Concentrator
• Cisco Vpn 3020 Concentrator
• Cisco Vpn 3030 Concentator
• Cisco Vpn 3060 Concentrator
• Cisco Vpn 3080 Concentrator
• Cisco Vpn 3000 Concentrator Series Software 2.0
• Cisco Vpn 3000 Concentrator Series Software 2.5.2.a

Attack profile CVSS 2.0 · 5.0

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2005-2025.md and follow it. Check whether this project is affected by CVE-2005-2025. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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