CVE-2009-1866

Stack-based buffer overflow in Adobe Flash Player before 9.0.246.0 and 10.x before 10.0.32.18,...

9.3 High

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.

Exploit likelihood

7.30%Up 0.7 points since Feb 4, 2022

What each source reports

NVD Score used 9.3

Record: CVE-2009-1866
CVSS 2.0: 9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2009-1866
Updated: 2026-11-02

EUVDEUVD-2009-1861 No score

Record: EUVD-2009-1861
Updated: 2026-11-03

GitHub AdvisoriesGHSA-f74w-j6qg-22r9 No score

Stack-based buffer overflow in Adobe Flash Player before 9.0.246.0 and 10.x before 10.0.32.18,...

Record: GHSA-f74w-j6qg-22r9
Weakness: CWE-119
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`flash-plugin` Red Hat:rhel_extras:5::client From an advisory covering 9 CVEs	before 0:10.0.32.18-2.el5	0:10.0.32.18-2.el5
`flash-plugin` Red Hat:rhel_extras:5::server From an advisory covering 9 CVEs	before 0:10.0.32.18-2.el5	0:10.0.32.18-2.el5
`flash-plugin` Red Hat:rhel_extras:3 From an advisory covering 9 CVEs	before 0:9.0.246.0-2.el3.with.oss	0:9.0.246.0-2.el3.with.oss
`flash-plugin` Red Hat:rhel_extras:4 From an advisory covering 9 CVEs	before 0:9.0.246.0-2.el4	0:9.0.246.0-2.el4

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-1866 is a high vulnerability (CVSS 9.3) in Adobe Air, published July 31, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.30%, the 94th percentile. No source names a fixed version.

References

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