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Fencer Vulns
critical 9.3

CVE-2009-0520 in the critical feed json

Adobe Flash Player 9.x before 9.0.159.0 and 10.x before 10.0.22.87 does not properly remove references to destroyed objects during Shockwav…

published 2009-02-26 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-0524

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
28.5%
EPSS 28.5% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

Adobe Flash Player 9.x before 9.0.159.0 and 10.x before 10.0.22.87 does not properly remove references to destroyed objects during Shockwave Flash file processing, which allows remote attackers to execute arbitrary code via a crafted file, related to a "buffer overflow issue."

Patch / fix

  • flash-plugin RHEL 3 EXTRAS 9.0.159.0-1.el3.with.oss
  • flash-plugin RHEL 4 EXTRAS 9.0.159.0-1.el4
  • flash-plugin RHEL 5 EXTRAS 10.0.22.87-1.el5

red hat advisories RHSA-2009:0334RHSA-2009:0332

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-2009-0520 updated cvss 6.8

flash-plugin: Buffer overflow (arbitrary code execution) via crafted SWF file.

  • Red Hat Desktop version 3 Extras flash-plugin 9.0.159.0-1.el3.with.oss Red Hat Desktop version 4 Extras flash-plugin 9.0.159.0-1.el4 Red Hat Enterprise Linux AS version 3 Extras flash-plugin 9.0.159.0-1.el3.with.oss Red Hat Enterprise Linux AS version 4 Extras flash-plugin 9.0.159.0-1.el4
    fixed: vendor fix RHSA-2009:0334
  • Red Hat Enterprise Linux Desktop Supplementary (v. 5) flash-plugin 10.0.22.87-1.el5
    fixed: vendor fix RHSA-2009:0332
  • Red Hat Enterprise Linux ES version 3 Extras flash-plugin 9.0.159.0-1.el3.with.oss Red Hat Enterprise Linux ES version 4 Extras flash-plugin 9.0.159.0-1.el4
    fixed: vendor fix RHSA-2009:0334
  • Red Hat Enterprise Linux Server Supplementary (v. 5) flash-plugin 10.0.22.87-1.el5
    fixed: vendor fix RHSA-2009:0332
  • Red Hat Enterprise Linux WS version 3 Extras flash-plugin 9.0.159.0-1.el3.with.oss Red Hat Enterprise Linux WS version 4 Extras flash-plugin 9.0.159.0-1.el4
    fixed: vendor fix RHSA-2009:0334

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

Timeline

  1. First public exploit (EDB-32811)
  2. Published

Exploit prediction

28.48% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-32811 Adobe Flash Player 9/10 - Invalid Object Reference Remote Code Execution remote, 2009-02-24

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.