CVE-2005-3669

Firewall Services Module vulnerability

CVSS

5.0

EPSS

5.1%

EPSS pct

92th

Exploited

No known

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.

Affected vendor

Cisco

Affected product

Firewall Services Module

CVSS vector

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

Published

2005-11-18

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 5.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2005-3669

Confirm whether Cisco Firewall Services Module is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2005-3669.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2005-3669

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2005-3669 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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