CVE-2008-4234: Apple Mac OS X

High severity, CVSS 9.3. EPSS: 4.6% chance of exploitation in the next 30 days.

Incomplete blacklist vulnerability in the Quarantine feature in CoreTypes in Apple Mac OS X 10.5 before 10.5.6 allows user-assisted remote attackers to execute arbitrary code via an executable file with the content type indicating no application association for the file, which does not trigger a "potentially unsafe" warning message.

Affected products

• Apple Mac OS X: up to and including 10.5.5; version 10.5 only; version 10.5.1 only; version 10.5.2 only; version 10.5.3 only; version 10.5.4 only
• Apple Mac OS X Server: up to and including 10.5.5; version 10.5 only; version 10.5.1 only; version 10.5.2 only; version 10.5.3 only; version 10.5.4 only

Published 2008-12-17. Last modified 2026-06-16.