CVE-2005-4465

What it is

The Internet Key Exchange version 1 (IKEv1) implementation in NEC UNIVERGE IX1000, IX2000, and IX3000 allows remote attackers to cause a denial of service and possibly execute arbitrary code via crafted IKE packets, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1. NOTE: due to the lack of details in the advisory, it is unclear which of CVE-2005-3666, CVE-2005-3667, and/or CVE-2005-3668 this issue applies to.

At a glance

Exploitability

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

Exploit odds

2.7% chance of exploitation in the next 30 days (EPSS).

Fix

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

Timeline

1. 2005-12-22 00:03 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:18 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 2.7% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2005-12-22 00:03 UTC

Last modified

2026-06-16 22:18 UTC

Exploit probability

2.7% · EPSS, next 30 days

Record status

Modified

Affected

• Nec Univerge ix1010
• Nec Univerge ix1011
• Nec Univerge ix1020
• Nec Univerge ix1050
• Nec Univerge ix2003
• Nec Univerge ix2004
• Nec Univerge ix2010
• Nec Univerge ix2015

Attack profile CVSS 2.0 · 7.5

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

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-2005-4465.md and follow it. Check whether this project is affected by CVE-2005-4465. 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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