Vulnerability Database

383,304

Total vulnerabilities in the database

CVE-2005-3669 — 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.

  • Published: Nov 18, 2005
  • Updated: Sep 13, 2026
  • CVE: CVE-2005-3669
  • Severity: Medium
  • Exploit:
  • CISA KEV:

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

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.