Cross-site scripting (XSS) vulnerability in BitDefender Internet Security 2009 allows user-assisted remote attackers to inject arbitrary web script or HTML via the filename of a virus-infected file, as demonstrated by a filename inside a (1) rar or (2) zip archive file.
Conclusion & alert: CVE-2009-0850 is rated Moderate Risk (56.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 29.95%, 98th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +29.50% over the last day, indicating growing attacker interest. 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 | 0.46% | 29.95% | +29.50% |
| 2 | 2025-03-17 | 18.39% | 0.46% | -17.93% |
| 3 | 2024-12-17 | — | 18.39% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| bitdefender | internet_security | 2009 | cpe:2.3:a:bitdefender:internet_security:2009:*:*:*:*:*:*:* |