CVE-2009-1866

CVE-2009-1866 is a critical-severity vulnerability in Adobe Air with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Description

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.

Frequently asked questions

What is CVE-2009-1866?
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.
How severe is CVE-2009-1866?
CVE-2009-1866 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2009-1866 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1866?
CVE-2009-1866 primarily affects Adobe Air. In total, 40 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1866?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2009-1866 published?
CVE-2009-1866 was published on 2009-07-31 and last updated on 2026-06-16.

References

Affected products (40)

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