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Fencer Vulns
critical 9.3

CVE-2009-1866 json

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…

published 2009-07-31 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1861

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.3%
EPSS 7.3% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

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.

Patch / fix

  • flash-plugin RHEL 3 EXTRAS 9.0.246.0-2.el3.with.oss
  • flash-plugin RHEL 4 EXTRAS 9.0.246.0-2.el4
  • flash-plugin RHEL 5 EXTRAS 10.0.32.18-2.el5

red hat advisories RHSA-2009:1189RHSA-2009:1188

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-1866 updated cvss 6.8

flash-plugin: multiple code execution flaws (APSB09-10)

  • Red Hat Desktop version 3 Extras flash-plugin 9.0.246.0-2.el3.with.oss Red Hat Desktop version 4 Extras flash-plugin 9.0.246.0-2.el4 Red Hat Enterprise Linux AS version 3 Extras flash-plugin 9.0.246.0-2.el3.with.oss Red Hat Enterprise Linux AS version 4 Extras flash-plugin 9.0.246.0-2.el4
    fixed: vendor fix RHSA-2009:1189
  • Red Hat Enterprise Linux Desktop Supplementary (v. 5) flash-plugin 10.0.32.18-2.el5
    fixed: vendor fix RHSA-2009:1188
  • Red Hat Enterprise Linux ES version 3 Extras flash-plugin 9.0.246.0-2.el3.with.oss Red Hat Enterprise Linux ES version 4 Extras flash-plugin 9.0.246.0-2.el4
    fixed: vendor fix RHSA-2009:1189
  • Red Hat Enterprise Linux Server Supplementary (v. 5) flash-plugin 10.0.32.18-2.el5
    fixed: vendor fix RHSA-2009:1188
  • Red Hat Enterprise Linux WS version 3 Extras flash-plugin 9.0.246.0-2.el3.with.oss Red Hat Enterprise Linux WS version 4 Extras flash-plugin 9.0.246.0-2.el4
    fixed: vendor fix RHSA-2009:1189

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

7.30% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.