Stack-based buffer overflow in JSGCI.DLL in JustSystems Ichitaro 2005, 2006, and 2007 allows user-assisted remote attackers to execute arbitrary code via a crafted document, as actively exploited in December 2007 by the Tarodrop.F trojan. NOTE: some of these details are obtained from third party information.
Conclusion & alert: CVE-2007-6436 is rated Moderate Risk (63.5/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 4.09%). 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 | 10.71% | 4.09% | -6.61% |
| 2 | 2025-08-28 | 5.82% | 10.71% | +4.89% |
| 3 | 2025-03-30 | — | 5.82% | — |
Full EPSS history (14 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| justsystem | ichitaro | 2005 | cpe:2.3:a:justsystem:ichitaro:2005:*:*:*:*:*:*:* |
| justsystem | ichitaro | 2006 | cpe:2.3:a:justsystem:ichitaro:2006:*:*:*:*:*:*:* |
| justsystem | ichitaro | 2007 | cpe:2.3:a:justsystem:ichitaro:2007:*:*:*:*:*:*:* |