CVE-2010-1398: Apple Safari

High severity, CVSS 9.3. EPSS: 8.6% chance of exploitation in the next 30 days.

WebKit in Apple Safari before 5.0 on Mac OS X 10.5 through 10.6 and Windows, and before 4.1 on Mac OS X 10.4, does not properly perform ordered list insertions, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted HTML document, related to the insertion of an unspecified element into an editable container and the access of an uninitialized element.

Affected products

• Apple Safari: up to and including 4.0.5; version 4.0 only; version 4.0.0b only; version 4.0.1 only; version 4.0.2 only; version 4.0.3 only; …
• Apple Webkit: any version

Published 2010-06-11. Last modified 2026-06-16.