CVE-2005-3673

7.8 HIGH 5% exploit odds Fix listed

What it is

The Internet Key Exchange version 1 (IKEv1) implementation in Check Point products allows remote attackers to cause a denial of service via certain 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. High risk of service disruption.
Exploit odds: 4.9% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2005-11-18 21:03 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 22:17 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 4.9% in the next 30 days (EPSS).
Severity: 7.8 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2005-11-18 21:03 UTC
Last modified: 2026-06-16 22:17 UTC
Exploit probability: 4.9% · EPSS, next 30 days
Record status: Modified

Affected

Checkpoint Check Point
Checkpoint Express ci_r57
Checkpoint firewall-1 3.0
Checkpoint vpn-1 ngx_r60
Checkpoint vpn-1 firewall-1 Next Generation r54
Checkpoint vpn-1 firewall-1 Next Generation r55
Checkpoint vpn-1 firewall-1 Next Generation r55p
Checkpoint vpn-1 firewall-1 Next Generation r55w

Attack profile CVSS 2.0 · 7.8

Attack vector: Network
Complexity: Low
Authentication: None
Confidentiality: None
Integrity: None
Availability: Complete

Raw vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

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-2005-3673.md and follow it. Check whether this project is affected by CVE-2005-3673. 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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Fix and advisories

References

NVD record · CVE.org record