CVE-2011-0163: Apple iPhone OS

Medium severity, CVSS 4.3. EPSS: 1.6% chance of exploitation in the next 30 days.

WebKit, as used in Apple Safari before 5.0.4 and iOS before 4.3, does not properly handle unspecified "cached resources," which allows remote attackers to cause a denial of service (resource unavailability) via a crafted web site that conducts a cache-poisoning attack.

Affected products

• Apple iPhone OS: up to and including 4.2; version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.1.0 only; version 1.1.1 only; …
• Apple Safari: up to and including 5.0.3; version 1.0 only; version 1.0.0 only; version 1.0.0b1 only; version 1.0.0b2 only; version 1.0.1 only; …
• Apple Webkit: any version

Published 2011-03-11. Last modified 2026-06-16.