eyeOS uses predictable checksum values in the checknum parameter for access control, which allows remote attackers to register many accounts via doCreateUser actions, add many eyeBoard messages via addMsg actions, and cause a denial of service or conduct certain unauthorized activities, by guessing valid parameter values.
Conclusion & alert: CVE-2007-4609 is rated Moderate Risk (51/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.71%). 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 | 2026-04-19 | 0.58% | 0.71% | +0.13% |
| 2 | 2025-09-25 | 0.53% | 0.58% | +0.05% |
| 3 | 2025-03-30 | — | 0.53% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.4 | 2.0 | MEDIUM |
|
10.0 | 4.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| eyeos_project | eyeos | — | cpe:2.3:o:eyeos_project:eyeos:*:*:*:*:*:*:*:* |