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CISA KEV · ACTIVELY EXPLOITED
HIGH severity

CVE-2009-4324 — Red Hat

HIGH

CVE-2009-4324 is a high-severity (CVSS 7.8) Use After Free vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2022-06-08) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

Use-after-free vulnerability in the Doc.media.newPlayer method in Multimedia.api in Adobe Reader and Acrobat 9.x before 9.3, and 8.x before 8.2 on Windows and Mac OS X, allows remote…

Published
Updated
Affected
5 products
Patched
See advisory
Exploits
8 known
Exploitation data as of Oct 24, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2022-06-08. Federal agencies were required to remediate by 2022-06-22.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2009-4324.

EPSS Exploitation Probability

via FIRST.org ↗
81.9%probability of exploitation in next 30 days
Very High Risk0.00%
Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk
78.5%84.4%90.3%96.2%92.9%81.9%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2009-4324 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 395,249 CVEs with a current EPSS score, this one falls in the 50–90% band (highlighted). Counts from FIRST.org, log-scaled.

Description

Use-after-free vulnerability in the Doc.media.newPlayer method in Multimedia.api in 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 PDF file using ZLib compressed streams, as exploited in the wild in December 2009.

Affected Products

5 products · 9 configurations
Application
acrobatadobe
≥ 9.0 && < 9.3
range
Application
acrobat readeradobe
≥ 9.0 && < 9.3
range
OS
opensuseopensuse
2 versions
11.111.2
OS
linux enterprisesuse
1 version
10.0
Application
linux enterprise debuginfosuse
1 version
11
Exploits & PoCs
8

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-16623localwindows✓ Verified

Adobe - 'Doc.media.newPlayer' Use-After-Free (Metasploit) (2)

by Metasploit · Sep 25, 2010

EDB-16503localwindows✓ Verified

Adobe - 'Doc.media.newPlayer' Use-After-Free (Metasploit) (1)

by Metasploit · Apr 30, 2010

EDB-10618localwindows✓ Verified

Adobe Reader / Acrobat - '.PDF' File Overflow

by Ahmed Obied · Dec 23, 2009

Detection & mitigation playbook

Vulnerability
  1. Detect

    Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

  2. Remediation status

    No fixed release is recorded for CVE-2009-4324 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

  3. Mitigate without a patch

    Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatCritical
ProductFixed inAdvisory
Extras for RHEL 3acroread-0:9.3-3RHSA-2010:0060
Extras for RHEL 4acroread-0:9.3-1.el4RHSA-2010:0038
Supplementary for Red Hat Enterprise Linux 5acroread-0:9.3-1.el5RHSA-2010:0037

Frequently Asked Questions

Use-after-free vulnerability in the Doc.media.newPlayer method in Multimedia.api in 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 PDF file using ZLib compressed streams, as exploited in the wild in December 2009.
O3 Security · Impact-Aware SCA

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CVE-2009-4324: Red Hat Use After Free (High 7.8, KEV)