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Vulnerability Score 7.8 7.8
CVE Id CVE-2011-2393
Last Modified 03 Feb 2012 12:00:00
Published 02 Feb 2012 12:55:00
Confidentiality Impact NONE NONE
Integrity Impact NONE NONE
Availability Impact COMPLETE COMPLETE
Access Vector NETWORK
Access Complexity LOW
Authentication NONE



The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in FreeBSD, NetBSD, and possibly other BSD-based operating systems allows remote attackers to cause a denial of service (CPU consumption and device hang) by sending many Router Advertisement (RA) messages with different source addresses, a similar vulnerability to CVE-2010-4670.

Vulnerable Systems

Operating System

  • Freebsd

  • Netbsd



FULLDISC - 20110405 ICMPv6 Router Announcement flooding denial of service affecting multiple systems

Last Updated: 27 May 2016 10:58:08