CVE-2009-3955

Adobe Reader and Acrobat 9.x before 9.3, and 8.x before 8.2 on Windows and Mac OS X, allows...

10.0 High

Adobe Reader and Acrobat 9.x before 9.3, and 8.x before 8.2 on Windows and Mac OS X, allows remote attackers to execute arbitrary code via a crafted JPC_MS_RGN marker in the Jp2c stream of a JpxDecode encoded data stream, which triggers an integer sign extension that bypasses a sanity check, leading to memory corruption.

Exploit likelihood

15.8%Up 4.5 points since Feb 4, 2022

What each source reports

NVD Score used 10.0

Record: CVE-2009-3955
CVSS 2.0: 10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-399
Updated: 2026-11-02

CVE List No score

Record: CVE-2009-3955
Updated: 2026-11-02

EUVDEUVD-2009-3926 No score

Record: EUVD-2009-3926
Updated: 2026-11-03

GitHub AdvisoriesGHSA-wfg4-6mw6-5m2j No score

Adobe Reader and Acrobat 9.x before 9.3, and 8.x before 8.2 on Windows and Mac OS X, allows...

Record: GHSA-wfg4-6mw6-5m2j
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`acroread` Red Hat:rhel_extras:5::client From an advisory covering 6 CVEs	before 0:9.3-1.el5	0:9.3-1.el5
`acroread-plugin` Red Hat:rhel_extras:5::client From an advisory covering 6 CVEs	before 0:9.3-1.el5	0:9.3-1.el5
`acroread` Red Hat:rhel_extras:5::server From an advisory covering 6 CVEs	before 0:9.3-1.el5	0:9.3-1.el5
`acroread-plugin` Red Hat:rhel_extras:5::server From an advisory covering 6 CVEs	before 0:9.3-1.el5	0:9.3-1.el5
`acroread` Red Hat:rhel_extras:4 From an advisory covering 6 CVEs	before 0:9.3-1.el4	0:9.3-1.el4
`acroread-plugin` Red Hat:rhel_extras:4 From an advisory covering 6 CVEs	before 0:9.3-1.el4	0:9.3-1.el4
`acroread-uninstall` Red Hat:rhel_extras:3 From an advisory covering 6 CVEs	before 0:9.3-3	0:9.3-3

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-3955 is a high vulnerability (CVSS 10.0) in Adobe Acrobat, published January 13, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 15.8%, the 96th percentile. No source names a fixed version.

References

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