CVE-2011-2391: Apple iPhone OS

Medium severity, CVSS 6.1. EPSS: 1.2% chance of exploitation in the next 30 days.

The IPv6 implementation in the kernel in Apple iOS before 7 allows remote attackers to cause a denial of service (CPU consumption) via crafted ICMPv6 packets.

Affected products

• Apple iPhone OS: up to and including 6.1.4; 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 iTunes: up to and including 12.1
• Apple Mac OS X: up to and including 10.9.5

Published 2013-09-19. Last modified 2026-06-16.