CVE-2009-1493: Adobe Reader

Medium severity, CVSS 6.8. EPSS: 21.8% chance of exploitation in the next 30 days.

The customDictionaryOpen spell method in the JavaScript API in Adobe Reader 9.1, 8.1.4, 7.1.1, and earlier on Linux and UNIX allows remote attackers to cause a denial of service (memory corruption) or execute arbitrary code via a PDF file that triggers a call to this method with a long string in the second argument.

Affected products

• Adobe Reader: version 8.1.4 only; version 9.1 only

Published 2009-04-30. Last modified 2026-06-16.