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Fencer Vulns
critical 9.3

CVE-2009-1856 in the critical feed json

Integer overflow in Adobe Reader 7 and Acrobat 7 before 7.1.3, Adobe Reader 8 and Acrobat 8 before 8.1.6, and Adobe Reader 9 and Acrobat 9…

published 2009-06-11 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1851

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
13.9%
EPSS 13.9% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

Integer overflow in Adobe Reader 7 and Acrobat 7 before 7.1.3, Adobe Reader 8 and Acrobat 8 before 8.1.6, and Adobe Reader 9 and Acrobat 9 before 9.1.2 allows attackers to cause a denial of service or possibly execute arbitrary code via a PDF file containing unspecified parameters to the FlateDecode filter, which triggers a heap-based buffer overflow.

Patch / fix

  • acroread RHEL 3 EXTRAS 8.1.6-1
  • acroread RHEL 4 EXTRAS 8.1.6-1.el4
  • acroread RHEL 5 EXTRAS 8.1.6-2.el5
  • acroread-plugin RHEL 3 EXTRAS 8.1.6-1
  • acroread-plugin RHEL 4 EXTRAS 8.1.6-1.el4
  • acroread-plugin RHEL 5 EXTRAS 8.1.6-2.el5

red hat advisories RHSA-2009:1109

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-2009-1856 updated cvss 6.8

acroread: multiple security fixes in version 8.1.6 (APSB09-07)

  • Red Hat Desktop version 3 Extras acroread 8.1.6-1, acroread-plugin 8.1.6-1 Red Hat Desktop version 4 Extras acroread 8.1.6-1.el4, acroread-plugin 8.1.6-1.el4 Red Hat Enterprise Linux AS version 3 Extras acroread 8.1.6-1, acroread-plugin 8.1.6-1 Red Hat Enterprise Linux AS version 4 Extras acroread 8.1.6-1.el4, acroread-plugin 8.1.6-1.el4 Red Hat Enterprise Linux Desktop Supplementary (v. 5) acroread 8.1.6-2.el5, acroread-plugin 8.1.6-2.el5 Red Hat Enterprise Linux ES version 3 Extras acroread 8.1.6-1, acroread-plugin 8.1.6-1
    +4 more products
    Red Hat Enterprise Linux ES version 4 Extras acroread 8.1.6-1.el4, acroread-plugin 8.1.6-1.el4 Red Hat Enterprise Linux Server Supplementary (v. 5) acroread 8.1.6-2.el5, acroread-plugin 8.1.6-2.el5 Red Hat Enterprise Linux WS version 3 Extras acroread 8.1.6-1, acroread-plugin 8.1.6-1 Red Hat Enterprise Linux WS version 4 Extras acroread 8.1.6-1.el4, acroread-plugin 8.1.6-1.el4
    fixed: vendor fix RHSA-2009:1109

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

13.86% chance of exploitation in the next 30 days, higher than 96% 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

References

Sources

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