The AntiVirus engine in the HTTP-ALG in Clavister CorePlus before 8.81.00 and 8.80.03 might allow remote attackers to bypass scanning via small files.
Conclusion & alert: CVE-2007-3804 is rated Moderate Risk (46.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.84%). 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 | 2026-03-04 | 0.37% | 0.84% | +0.46% |
| 2 | 2025-09-30 | 0.27% | 0.37% | +0.10% |
| 3 | 2025-03-17 | — | 0.27% | — |
Full EPSS history (12 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| clavister | clavister_coreplus | <= 8.80.03 | cpe:2.3:a:clavister:clavister_coreplus:*:*:*:*:*:*:*:* |
| clavister | clavister_coreplus | <= 8.81.00 | cpe:2.3:a:clavister:clavister_coreplus:*:*:*:*:*:*:*:* |