CVE-2009-2189: Apple Airport Express

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

The ICMPv6 implementation on the Apple Time Capsule, AirPort Extreme Base Station, and AirPort Express Base Station with firmware before 7.5.2 does not limit the rate of (1) Router Advertisement and (2) Neighbor Discovery packets, which allows remote attackers to cause a denial of service (resource consumption and device restart) by sending many packets.

Affected products

• Apple Airport Express: any version
• Apple Airport Express Base Station Firmware: up to and including 7.4.2; version 3.84 only; version 4.0.9 only; version 6.1 only; version 6.3 only; version 7.3.2 only; …
• Apple Airport Extreme: any version
• Apple Airport Extreme Base Station Firmware: version 5.5 only; version 5.7 only
• Apple Time Capsule: any version

Published 2010-12-22. Last modified 2026-06-16.