CVE-2009-2421: Apple Safari

Medium severity, CVSS 5.0. EPSS: 2.5% chance of exploitation in the next 30 days.

The CFCharacterSetInitInlineBuffer method in CoreFoundation.dll in Apple Safari 3.2.3 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly execute arbitrary code via a "high-bit character" in a URL fragment for an unspecified protocol.

Affected products

• Apple Safari: version 3.2.3 only

Published 2009-07-09. Last modified 2026-06-16.