The Internet Key Exchange version 1 (IKEv1) implementation in Clavister Client Web allows remote attackers to cause a denial of service and possibly execute arbitrary code via 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.
Conclusion & alert: CVE-2005-3915 is rated Moderate Risk (60.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.76%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2026-06-15 | 1.80% | 2.76% | +0.96% |
| 2 | 2025-03-30 | 2.67% | 1.80% | -0.88% |
| 3 | 2025-03-29 | — | 2.67% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| clavister | clavister_firewall | 8.30.01 | cpe:2.3:o:clavister:clavister_firewall:8.30.01:*:*:*:*:*:*:* |
| clavister | clavister_security_gateway | 8.40.05 | cpe:2.3:o:clavister:clavister_security_gateway:8.40.05:*:*:*:*:*:*:* |
| clavister | clavister_security_gateway | 8.50.02 | cpe:2.3:o:clavister:clavister_security_gateway:8.50.02:*:*:*:*:*:*:* |
| clavister | clavister_security_gateway | 8.60.01_rc1 | cpe:2.3:o:clavister:clavister_security_gateway:8.60.01_rc1:*:*:*:*:*:*:* |