Buffer overflow in the WriteToLog function for JRun 3.0 through 4.0 web server connectors, such as (1) mod_jrun and (2) mod_jrun20 for Apache, with verbose logging enabled, allows remote attackers to execute arbitrary code via a long HTTP header Content-Type field or other fields.
Conclusion & alert: CVE-2004-0646 is rated High Risk (69.5/100): CVSS Critical severity, with high exploitation likelihood (EPSS 70.95%, 99th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. 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 | 2025-03-30 | 75.93% | 70.95% | -4.98% |
| 2 | 2025-03-29 | 70.95% | 75.93% | +4.98% |
| 3 | 2025-03-17 | — | 70.95% | — |
Full EPSS history (7 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 |
|---|---|---|---|
| macromedia | coldfusion | 6.0 | cpe:2.3:a:macromedia:coldfusion:6.0:*:*:*:*:*:*:* |
| macromedia | coldfusion | 6.1 | cpe:2.3:a:macromedia:coldfusion:6.1:*:*:*:*:*:*:* |
| macromedia | jrun | 3.0 | cpe:2.3:a:macromedia:jrun:3.0:*:*:*:*:*:*:* |
| macromedia | jrun | 3.1 | cpe:2.3:a:macromedia:jrun:3.1:*:*:*:*:*:*:* |
| macromedia | jrun | 4.0 | cpe:2.3:a:macromedia:jrun:4.0:*:*:*:*:*:*:* |