add_user.php in Virtual Hosting Control System (VHCS) 2.4.7.1 and earlier does not check user privileges when adding a new administrative user, which allows remote attackers to gain unauthorized access.
Conclusion & alert: CVE-2006-0686 is rated High Risk (70.1/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.81%). Mandatory action: 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.
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 | 2.39% | 2.81% | +0.43% |
| 2 | 2025-03-30 | 3.74% | 2.39% | -1.36% |
| 3 | 2025-03-29 | — | 3.74% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| virtual_hosting_control_system | virtual_hosting_control_system | <= 2.4.7.1 | cpe:2.3:a:virtual_hosting_control_system:virtual_hosting_control_system:*:*:*:*:*:*:*:* |