Microsoft Windows Media Player 6.4, Windows Media Format Runtime 7.1 through 11, and Windows Media Services 4.1, 9, and 2008 do not properly use the Service Principal Name (SPN) identifier when validating replies to authentication requests, which allows remote servers to execute arbitrary code via vectors that employ NTLM credential reflection, aka "SPN Vulnerability."
Conclusion & alert: CVE-2008-3009 is rated High Risk (68.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 15.83%, 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 | 52.28% | 15.83% | -36.45% |
| 2 | 2025-12-28 | 41.88% | 52.28% | +10.39% |
| 3 | 2025-12-27 | — | 41.88% | — |
Full EPSS history (25 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 |
|---|---|---|---|
| microsoft | windows_media_player | 6.4 | cpe:2.3:a:microsoft:windows_media_player:6.4:*:*:*:*:*:*:* |
| microsoft | windows_media_format_runtime | 7.1 | cpe:2.3:a:microsoft:windows_media_format_runtime:7.1:*:*:*:*:*:*:* |
| microsoft | windows_media_services | 4.1 | cpe:2.3:a:microsoft:windows_media_services:4.1:*:*:*:*:*:*:* |
| microsoft | windows_media_services | 9 | cpe:2.3:a:microsoft:windows_media_services:9:*:*:*:*:*:*:* |
| microsoft | windows_media_services | 2008 | cpe:2.3:a:microsoft:windows_media_services:2008:*:*:*:*:*:*:* |
| microsoft | windows_media_format_runtime | 11 | cpe:2.3:a:microsoft:windows_media_format_runtime:11:*:*:*:*:*:*:* |
| microsoft | windows_media_format_runtime | 11 | cpe:2.3:a:microsoft:windows_media_format_runtime:11:*:x64:*:*:*:*:* |
| microsoft | windows_media_format_runtime | 9.5 | cpe:2.3:a:microsoft:windows_media_format_runtime:9.5:*:x64:*:*:*:*:* |
| microsoft | windows_media_format_runtime | 9.5 | cpe:2.3:a:microsoft:windows_media_format_runtime:9.5:*:*:*:*:*:*:* |
| microsoft | windows_media_format_runtime | 9 | cpe:2.3:a:microsoft:windows_media_format_runtime:9:*:*:*:*:*:*:* |