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Vulnerability record · CVE-2005-3669 · published 18 November 2005

CVE-2005-3669: Cisco firewall services module vulnerability

Cisco · Firewall Services Module

Multiple unspecified vulnerabilities in the Internet Key Exchange version 1 (IKEv1) implementation in multiple Cisco products allow remote attackers to cause a denial of service (device reset) via certain malformed IKE packets, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1. NOTE: due to the lack of details in the Cisco advisory, it is unclear which of CVE-2005-3666, CVE-2005-3667, and/or CVE-2005-3668 this issue applies to.

5.0 CVSS 2.0 Medium EPSS 5.2% · top 7.8%
5.0CVSS 2.0 base score
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
8Affected product versions listed by NVD
26References
16 Jun 2026Last modified by NVD

Description

Multiple unspecified vulnerabilities in the Internet Key Exchange version 1 (IKEv1) implementation in multiple Cisco products allow remote attackers to cause a denial of service (device reset) via certain malformed IKE packets, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1. NOTE: due to the lack of details in the Cisco advisory, it is unclear which of CVE-2005-3666, CVE-2005-3667, and/or CVE-2005-3668 this issue applies to.

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

Affected products

8 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://jvn.jp/niscc/NISCC-273756/index.html
http://secunia.com/advisories/17553
http://securitytracker.com/id?1015198
http://securitytracker.com/id?1015199
http://securitytracker.com/id?1015200
http://securitytracker.com/id?1015201
http://securitytracker.com/id?1015202
http://www.cisco.com/warp/public/707/cisco-sa-20051114-ipsec.shtml Vendor Advisory
http://www.ee.oulu.fi/research/ouspg/protos/testing/c09/isakmp/
http://www.kb.cert.org/vuls/id/226364 Third Party AdvisoryUS Government Resource
http://www.niscc.gov.uk/niscc/docs/br-20051114-01013.html?lang=en Vendor Advisory
http://www.securityfocus.com/bid/15401
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5226
http://jvn.jp/niscc/NISCC-273756/index.html
http://secunia.com/advisories/17553
http://securitytracker.com/id?1015198
http://securitytracker.com/id?1015199
http://securitytracker.com/id?1015200
http://securitytracker.com/id?1015201
http://securitytracker.com/id?1015202
http://www.cisco.com/warp/public/707/cisco-sa-20051114-ipsec.shtml Vendor Advisory
http://www.ee.oulu.fi/research/ouspg/protos/testing/c09/isakmp/
http://www.kb.cert.org/vuls/id/226364 Third Party AdvisoryUS Government Resource
http://www.niscc.gov.uk/niscc/docs/br-20051114-01013.html?lang=en Vendor Advisory
http://www.securityfocus.com/bid/15401
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5226

Track CVE-2005-3669 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2005-3669), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.