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Fencer Vulns
critical 10.0

CVE-2009-3956 json

The default configuration of Adobe Reader and Acrobat 9.x before 9.3, and 8.x before 8.2 on Windows and Mac OS X, does not enable the Enhan…

published 2010-01-13 16 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3927

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.7%
EPSS 7.7% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

The default configuration of Adobe Reader and Acrobat 9.x before 9.3, and 8.x before 8.2 on Windows and Mac OS X, does not enable the Enhanced Security feature, which has unspecified impact and attack vectors, related to a "script injection vulnerability," as demonstrated by Acrobat Forms Data Format (FDF) behavior that allows cross-site scripting (XSS) by user-assisted remote attackers.

Patch / fix

  • acroread-uninstall RHEL 3 EXTRAS 9.3-3
  • acroread RHEL 4 EXTRAS 9.3-1.el4
  • acroread-plugin RHEL 4 EXTRAS 9.3-1.el4
  • acroread RHEL 5 EXTRAS 9.3-1.el5
  • acroread-plugin RHEL 5 EXTRAS 9.3-1.el5

red hat advisories RHSA-2010:0060RHSA-2010:0038RHSA-2010:0037

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-2009-3956 updated cvss 4.3

acroread: script injection vulnerability (APSB10-02)

  • Red Hat Desktop version 3 Extras acroread-uninstall 9.3-3
    fixed: vendor fix RHSA-2010:0060
  • Red Hat Desktop version 4 Extras acroread 9.3-1.el4, acroread-plugin 9.3-1.el4
    fixed: vendor fix RHSA-2010:0038
  • Red Hat Enterprise Linux AS version 3 Extras acroread-uninstall 9.3-3
    fixed: vendor fix RHSA-2010:0060
  • Red Hat Enterprise Linux AS version 4 Extras acroread 9.3-1.el4, acroread-plugin 9.3-1.el4
    fixed: vendor fix RHSA-2010:0038
  • Red Hat Enterprise Linux Desktop Supplementary (v. 5) acroread 9.3-1.el5, acroread-plugin 9.3-1.el5
    fixed: vendor fix RHSA-2010:0037
  • Red Hat Enterprise Linux ES version 3 Extras acroread-uninstall 9.3-3
    fixed: vendor fix RHSA-2010:0060
  • Red Hat Enterprise Linux ES version 4 Extras acroread 9.3-1.el4, acroread-plugin 9.3-1.el4
    fixed: vendor fix RHSA-2010:0038
  • Red Hat Enterprise Linux Server Supplementary (v. 5) acroread 9.3-1.el5, acroread-plugin 9.3-1.el5
    fixed: vendor fix RHSA-2010:0037
show 2 more
  • Red Hat Enterprise Linux WS version 3 Extras acroread-uninstall 9.3-3
    fixed: vendor fix RHSA-2010:0060
  • Red Hat Enterprise Linux WS version 4 Extras acroread 9.3-1.el4, acroread-plugin 9.3-1.el4
    fixed: vendor fix RHSA-2010:0038

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

7.73% 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 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

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.