CVE-2009-4324: Adobe Acrobat and Reader Use-After-Free Vulnerability

High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2022-06-08. EPSS: 81.9% chance of exploitation in the next 30 days.

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

• Adobe Acrobat: from 8.0, before 8.2 (fixed in 8.2); from 9.0, before 9.3 (fixed in 9.3)
• Adobe Acrobat Reader: from 8.0, before 8.2 (fixed in 8.2); from 9.0, before 9.3 (fixed in 9.3)
• Opensuse Opensuse: version 11.1 only; version 11.2 only
• Suse Linux Enterprise: version 10.0 only
• Suse Linux Enterprise Debuginfo: version 11 only

Published 2009-12-15. Last modified 2026-06-16.