Stack-based buffer overflow in Adobe Flash Player before 9.0.246.0 and 10.x before 10.0.32.18, and Adobe AIR before 1.5.2, allows attackers to cause a denial of service (application crash) or possibly execute arbitrary code via unspecified vectors.
Conclusion & alert: CVE-2009-1866 is rated High Risk (67/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 3.21%). 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 | 2025-06-10 | 3.69% | 3.21% | -0.48% |
| 2 | 2025-03-30 | 5.96% | 3.69% | -2.27% |
| 3 | 2025-03-29 | — | 5.96% | — |
Full EPSS history (11 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 | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2009-1866: 1 GLSA(s) (200908-04), 2 atom(s) (app-text/acroread, www-plugins/adobe-flash); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-1866 |
redhat
|
critical | — | https://access.redhat.com/security/cve/CVE-2009-1866 |
ubuntu
|
medium | CVE-2009-1866 medium priority: Ubuntu including 2 source packages (adobe-flashplugin, flashplugin-nonfree), 12 status rows across 6 suites (dapper, hardy, intrepid, jaunty, karmic, upstream): released 10, DNE 1, ignored 1. | https://ubuntu.com/security/CVE-2009-1866 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| adobe | air | <= 1.5.1 | cpe:2.3:a:adobe:air:*:*:*:*:*:*:*:* |
| adobe | air | 1.0 | cpe:2.3:a:adobe:air:1.0:*:*:*:*:*:*:* |
| adobe | air | 1.01 | cpe:2.3:a:adobe:air:1.01:*:*:*:*:*:*:* |
| adobe | air | 1.1 | cpe:2.3:a:adobe:air:1.1:*:*:*:*:*:*:* |
| adobe | air | 1.5 | cpe:2.3:a:adobe:air:1.5:*:*:*:*:*:*:* |
| adobe | flash_player | <= 10.0.22.87 | cpe:2.3:a:adobe:flash_player:*:*:*:*:*:*:*:* |
| adobe | flash_player | 7.0 | cpe:2.3:a:adobe:flash_player:7.0:*:*:*:*:*:*:* |
| adobe | flash_player | 7.0.1 | cpe:2.3:a:adobe:flash_player:7.0.1:*:*:*:*:*:*:* |
| adobe | flash_player | 7.0.25 | cpe:2.3:a:adobe:flash_player:7.0.25:*:*:*:*:*:*:* |
| adobe | flash_player | 7.0.63 | cpe:2.3:a:adobe:flash_player:7.0.63:*:*:*:*:*:*:* |
| adobe | flash_player | 7.0.63 | cpe:2.3:a:adobe:flash_player:7.0.63:*:linux:*:*:*:*:* |
| adobe | flash_player | 7.0.69.0 | cpe:2.3:a:adobe:flash_player:7.0.69.0:*:*:*:*:*:*:* |
| adobe | flash_player | 7.0.70.0 | cpe:2.3:a:adobe:flash_player:7.0.70.0:*:*:*:*:*:*:* |
| adobe | flash_player | 7.1 | cpe:2.3:a:adobe:flash_player:7.1:*:*:*:*:*:*:* |
| adobe | flash_player | 7.1.1 | cpe:2.3:a:adobe:flash_player:7.1.1:*:*:*:*:*:*:* |
| adobe | flash_player | 7.2 | cpe:2.3:a:adobe:flash_player:7.2:*:*:*:*:*:*:* |
| adobe | flash_player | 8.0 | cpe:2.3:a:adobe:flash_player:8.0:*:*:*:*:*:*:* |
| adobe | flash_player | 8.0 | cpe:2.3:a:adobe:flash_player:8.0:*:basic:*:*:*:*:* |
| adobe | flash_player | 8.0 | cpe:2.3:a:adobe:flash_player:8.0:*:pro:*:*:*:*:* |
| adobe | flash_player | 8.0.24.0 | cpe:2.3:a:adobe:flash_player:8.0.24.0:*:*:*:*:*:*:* |
| adobe | flash_player | 8.0.34.0 | cpe:2.3:a:adobe:flash_player:8.0.34.0:*:*:*:*:*:*:* |
| adobe | flash_player | 8.0.35.0 | cpe:2.3:a:adobe:flash_player:8.0.35.0:*:*:*:*:*:*:* |
| adobe | flash_player | 8.0.39.0 | cpe:2.3:a:adobe:flash_player:8.0.39.0:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.16 | cpe:2.3:a:adobe:flash_player:9.0.16:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.20 | cpe:2.3:a:adobe:flash_player:9.0.20:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.20.0 | cpe:2.3:a:adobe:flash_player:9.0.20.0:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.28 | cpe:2.3:a:adobe:flash_player:9.0.28:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.28.0 | cpe:2.3:a:adobe:flash_player:9.0.28.0:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.31.0 | cpe:2.3:a:adobe:flash_player:9.0.31.0:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.45.0 | cpe:2.3:a:adobe:flash_player:9.0.45.0:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.47.0 | cpe:2.3:a:adobe:flash_player:9.0.47.0:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.48.0 | cpe:2.3:a:adobe:flash_player:9.0.48.0:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.112.0 | cpe:2.3:a:adobe:flash_player:9.0.112.0:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.114.0 | cpe:2.3:a:adobe:flash_player:9.0.114.0:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.115.0 | cpe:2.3:a:adobe:flash_player:9.0.115.0:*:*:*:*:*:*:* |
| adobe | flash_player | 9.0.124.0 | cpe:2.3:a:adobe:flash_player:9.0.124.0:*:*:*:*:*:*:* |
| adobe | flash_player | 10.0.0.584 | cpe:2.3:a:adobe:flash_player:10.0.0.584:*:*:*:*:*:*:* |
| adobe | flash_player | 10.0.12.10 | cpe:2.3:a:adobe:flash_player:10.0.12.10:*:*:*:*:*:*:* |
| adobe | flash_player | 10.0.12.36 | cpe:2.3:a:adobe:flash_player:10.0.12.36:*:*:*:*:*:*:* |
| adobe | flex | 3.0 | cpe:2.3:a:adobe:flex:3.0:*:*:*:*:*:*:* |