CVE-2005-3673

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.

Published: 2005-11-18 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2005-3673 is rated High Risk (66.2/100): CVSS High severity, with high exploitation likelihood (EPSS 9.32%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +2.79% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2005-3673

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 6.53% 9.32% +2.79%
2 2025-03-29 9.32% 6.53% -2.79%
3 2025-03-19 — 9.32% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2005-3673

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2005-3673

Affected software / configurations for CVE-2005-3673

Vendor Product Version Raw CPE
checkpoint check_point — cpe:2.3:a:checkpoint:check_point:*:*:*:*:*:*:*:*
checkpoint express ci_r57 cpe:2.3:a:checkpoint:express:ci_r57:*:*:*:*:*:*:*
checkpoint firewall-1 3.0 cpe:2.3:a:checkpoint:firewall-1:3.0:*:gx:*:*:*:*:*
checkpoint vpn-1 ngx_r60 cpe:2.3:a:checkpoint:vpn-1:ngx_r60:*:pro:*:*:*:*:*
checkpoint vpn-1_firewall-1_next_generation r54 cpe:2.3:a:checkpoint:vpn-1_firewall-1_next_generation:r54:*:*:*:*:*:*:*
checkpoint vpn-1_firewall-1_next_generation r55 cpe:2.3:a:checkpoint:vpn-1_firewall-1_next_generation:r55:*:*:*:*:*:*:*
checkpoint vpn-1_firewall-1_next_generation r55p cpe:2.3:a:checkpoint:vpn-1_firewall-1_next_generation:r55p:*:*:*:*:*:*:*
checkpoint vpn-1_firewall-1_next_generation r55w cpe:2.3:a:checkpoint:vpn-1_firewall-1_next_generation:r55w:*:*:*:*:*:*:*

References for CVE-2005-3673

cvelogic Threat Intelligence