Apache before 2.0.44, when running on unpatched Windows 9x and Me operating systems, allows remote attackers to cause a denial of service or execute arbitrary code via an HTTP request containing MS-DOS device names.
Conclusion & alert: CVE-2003-0016 is rated Moderate Risk (58.8/100): CVSS High severity, with high exploitation likelihood (EPSS 16.01%, 96th 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 | 2026-06-15 | 46.18% | 16.01% | -30.18% |
| 2 | 2026-05-07 | 45.03% | 46.18% | +1.15% |
| 3 | 2025-12-28 | — | 45.03% | — |
Full EPSS history (14 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
Fixed in Apache HTTP Server 2.0.44: http://httpd.apache.org/security/vulnerabilities_20.html
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apache | http_server | 2.0.36 | cpe:2.3:a:apache:http_server:2.0.36:*:*:*:*:*:*:* |
| apache | http_server | 2.0.37 | cpe:2.3:a:apache:http_server:2.0.37:*:*:*:*:*:*:* |
| apache | http_server | 2.0.38 | cpe:2.3:a:apache:http_server:2.0.38:*:*:*:*:*:*:* |
| apache | http_server | 2.0.39 | cpe:2.3:a:apache:http_server:2.0.39:*:*:*:*:*:*:* |
| apache | http_server | 2.0.40 | cpe:2.3:a:apache:http_server:2.0.40:*:*:*:*:*:*:* |
| apache | http_server | 2.0.41 | cpe:2.3:a:apache:http_server:2.0.41:*:*:*:*:*:*:* |
| apache | http_server | 2.0.42 | cpe:2.3:a:apache:http_server:2.0.42:*:*:*:*:*:*:* |
| apache | http_server | 2.0.43 | cpe:2.3:a:apache:http_server:2.0.43:*:*:*:*:*:*:* |