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CVE-2009-4324

Adobe Acrobat and Reader Use-After-Free Vulnerability

  • High 7.8
  • Exploited: added to CISA KEV 8 Jun 2022

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.

Key facts

Published
15 Dec 2009
Last changed
22 Oct 2025
Assigned by
adobe
KEV added
8 Jun 2022
KEV fix due
22 Jun 2022
EPSS
81.88% likely to be exploited in the next 30 days, higher than 99.656% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 7.8CVSS 3.1, Highfrom CISA (ADP container)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What to do

  • Apply updates per vendor instructions.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
n/an/a
  • n/a (affected)

Timeline

  1. 15 Dec 2009 Published
  2. 8 Jun 2022 CVE-2009-4324 added to CISA KEV
  3. 8 Jun 2022 Added to the CISA KEV catalogue

Weakness

References