Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2005-3669

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.

  • Published: Nov 18, 2005
  • Updated: Nov 9, 2025
  • CVE: CVE-2005-3669
  • Severity: Medium
  • Exploit:

CVSS v2:

  • Severity: Medium
  • Score: 5
  • AV:N/AC:L/Au:N/C:N/I:N/A:P

No CWE or OWASP classifications available.

Software From Fixed in
cisco / firewall_services_module - -
cisco / firewall_services_module 1.1.3 1.1.3.x
cisco / firewall_services_module 1.1.2 1.1.2.x
cisco / firewall_services_module 1.1_(3.005) 1.1_(3.005).x
cisco / firewall_services_module 2.1_(0.208) 2.1_(0.208).x
cisco / vpn_3000_concentrator_series_software 2.5.2.b 2.5.2.b.x
cisco / vpn_3000_concentrator_series_software 2.5.2.c 2.5.2.c.x
cisco / vpn_3000_concentrator_series_software 2.5.2.d 2.5.2.d.x
cisco / vpn_3000_concentrator_series_software 2.5.2.f 2.5.2.f.x
cisco / vpn_3000_concentrator_series_software 3.0 3.0.x
cisco / vpn_3000_concentrator_series_software 3.5.2 3.5.2.x
cisco / vpn_3000_concentrator_series_software 3.5.3 3.5.3.x
cisco / vpn_3000_concentrator_series_software 3.5.4 3.5.4.x
cisco / vpn_3000_concentrator_series_software 3.5.5 3.5.5.x
cisco / vpn_3000_concentrator_series_software 4.1.5.b 4.1.5.b.x
cisco / vpn_3000_concentrator_series_software 4.1.7.a 4.1.7.a.x
cisco / vpn_3000_concentrator_series_software 4.1.7.b 4.1.7.b.x
cisco / vpn_3000_concentrator_series_software 4.7.1 4.7.1.x
cisco / vpn_3000_concentrator_series_software 4.7.1.f 4.7.1.f.x
cisco / vpn_3000_concentrator_series_software 3.1 3.1.x
cisco / vpn_3000_concentrator_series_software 3.1(rel) 3.1(rel).x
cisco / vpn_3000_concentrator_series_software 3.1.1 3.1.1.x
cisco / vpn_3000_concentrator_series_software 3.6.7d 3.6.7d.x
cisco / vpn_3000_concentrator_series_software 4.0 4.0.x
cisco / vpn_3000_concentrator_series_software 3.6.7 3.6.7.x
cisco / vpn_3000_concentrator_series_software 3.0.3.a 3.0.3.a.x
cisco / vpn_3000_concentrator_series_software 2.0 2.0.x
cisco / vpn_3000_concentrator_series_software 3.1.4 3.1.4.x
cisco / vpn_3000_concentrator_series_software 3.5(rel) 3.5(rel).x
cisco / vpn_3000_concentrator_series_software 4.0.1 4.0.1.x
cisco / vpn_3000_concentrator_series_software 4.0.5.b 4.0.5.b.x
cisco / vpn_3000_concentrator_series_software 2.5.2.a 2.5.2.a.x
cisco / vpn_3000_concentrator_series_software 3.0.3.b 3.0.3.b.x
cisco / vpn_3000_concentrator_series_software 3.0.4 3.0.4.x
cisco / vpn_3000_concentrator_series_software 3.1.2 3.1.2.x
cisco / vpn_3000_concentrator_series_software 3.5.1 3.5.1.x
cisco / vpn_3000_concentrator_series_software 3.6 3.6.x
cisco / vpn_3000_concentrator_series_software 3.6.1 3.6.1.x
cisco / ios 12.2sxd 12.2sxd.x
cisco / ios 12.3t 12.3t.x
cisco / ios 12.3tpc 12.3tpc.x
cisco / ios 12.3xd 12.3xd.x
cisco / ios 12.3xe 12.3xe.x
cisco / ios 12.3xf 12.3xf.x
cisco / ios 12.3xg 12.3xg.x
cisco / ios 12.3xh 12.3xh.x
cisco / ios 12.3xi 12.3xi.x
cisco / ios 12.3xj 12.3xj.x
cisco / ios 12.3xk 12.3xk.x
cisco / ios 12.3xm 12.3xm.x
cisco / ios 12.3xq 12.3xq.x
cisco / ios 12.3xr 12.3xr.x
cisco / ios 12.3xs 12.3xs.x
cisco / ios 12.3xu 12.3xu.x
cisco / ios 12.3xw 12.3xw.x
cisco / ios 12.3xx 12.3xx.x
cisco / ios 12.3ya 12.3ya.x
cisco / ios 12.3yd 12.3yd.x
cisco / ios 12.3yf 12.3yf.x
cisco / ios 12.3yg 12.3yg.x
cisco / ios 12.3yh 12.3yh.x
cisco / ios 12.3yi 12.3yi.x
cisco / ios 12.3yj 12.3yj.x
cisco / ios 12.3yk 12.3yk.x
cisco / ios 12.3ym 12.3ym.x
cisco / ios 12.3yq 12.3yq.x
cisco / ios 12.3ys 12.3ys.x
cisco / ios 12.3yt 12.3yt.x
cisco / ios 12.3yu 12.3yu.x
cisco / ios 12.3yw 12.3yw.x
cisco / ios 12.3yx 12.3yx.x
cisco / ios 12.4 12.4.x
cisco / ios 12.4t 12.4t.x
cisco / ios 12.4xa 12.4xa.x
cisco / ios 12.4xb 12.4xb.x
cisco / adaptive_security_appliance_software 7.0 7.0.x
cisco / pix_firewall 6.2.2_.111 6.2.2_.111.x
cisco / pix_firewall 6.2.3_(110) 6.2.3_(110).x
cisco / pix_firewall 6.3.3_(133) 6.3.3_(133).x
cisco / mds_9000 - -
cisco / mds_9000_san-os 1.3(3.33) 1.3(3.33).x
cisco / mds_9000_san-os 1.3(4a) 1.3(4a).x
cisco / mds_9000_san-os 2.0(0.86) 2.0(0.86).x
cisco / pix_firewall_software 2.7 2.7.x
cisco / pix_firewall_software 3.0 3.0.x
cisco / pix_firewall_software 3.1 3.1.x
cisco / pix_firewall_software 4.0 4.0.x
cisco / pix_firewall_software 4.1(6) 4.1(6).x
cisco / pix_firewall_software 4.1(6b) 4.1(6b).x
cisco / pix_firewall_software 4.2 4.2.x
cisco / pix_firewall_software 4.2(1) 4.2(1).x
cisco / pix_firewall_software 4.2(2) 4.2(2).x
cisco / pix_firewall_software 4.2(5) 4.2(5).x
cisco / pix_firewall_software 4.3 4.3.x
cisco / pix_firewall_software 4.4 4.4.x
cisco / pix_firewall_software 4.4(4) 4.4(4).x
cisco / pix_firewall_software 4.4(7.202) 4.4(7.202).x
cisco / pix_firewall_software 4.4(8) 4.4(8).x
cisco / pix_firewall_software 5.0 5.0.x
cisco / pix_firewall_software 5.1 5.1.x
cisco / pix_firewall_software 5.1(4) 5.1(4).x
cisco / pix_firewall_software 5.1(4.206) 5.1(4.206).x
cisco / pix_firewall_software 5.2 5.2.x
cisco / pix_firewall_software 5.2(1) 5.2(1).x
cisco / pix_firewall_software 5.2(2) 5.2(2).x
cisco / pix_firewall_software 5.2(3.210) 5.2(3.210).x
cisco / pix_firewall_software 5.2(5) 5.2(5).x
cisco / pix_firewall_software 5.2(6) 5.2(6).x
cisco / pix_firewall_software 5.2(7) 5.2(7).x
cisco / pix_firewall_software 5.2(9) 5.2(9).x
cisco / pix_firewall_software 5.3 5.3.x
cisco / pix_firewall_software 5.3(1) 5.3(1).x
cisco / pix_firewall_software 5.3(1.200) 5.3(1.200).x
cisco / pix_firewall_software 5.3(2) 5.3(2).x
cisco / pix_firewall_software 5.3(3) 5.3(3).x
cisco / pix_firewall_software 6.0 6.0.x
cisco / pix_firewall_software 6.0(1) 6.0(1).x
cisco / pix_firewall_software 6.0(2) 6.0(2).x
cisco / pix_firewall_software 6.0(3) 6.0(3).x
cisco / pix_firewall_software 6.0(4) 6.0(4).x
cisco / pix_firewall_software 6.0(4.101) 6.0(4.101).x
cisco / pix_firewall_software 6.1 6.1.x
cisco / pix_firewall_software 6.1(1) 6.1(1).x
cisco / pix_firewall_software 6.1(2) 6.1(2).x
cisco / pix_firewall_software 6.1(3) 6.1(3).x
cisco / pix_firewall_software 6.1(4) 6.1(4).x
cisco / pix_firewall_software 6.1(5) 6.1(5).x
cisco / pix_firewall_software 6.2 6.2.x
cisco / pix_firewall_software 6.2(1) 6.2(1).x
cisco / pix_firewall_software 6.2(2) 6.2(2).x
cisco / pix_firewall_software 6.2(3) 6.2(3).x
cisco / pix_firewall_software 6.2(3.100) 6.2(3.100).x
cisco / pix_firewall_software 6.3 6.3.x
cisco / pix_firewall_software 6.3(1) 6.3(1).x
cisco / pix_firewall_software 6.3(2) 6.3(2).x
cisco / pix_firewall_software 6.3(3.102) 6.3(3.102).x
cisco / pix_firewall_software 6.3(3.109) 6.3(3.109).x
cisco / pix_firewall_software 6.1.5(104) 6.1.5(104).x

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.