CVE-2011-2395

MediumCVSS 5.0/10Last modified Jun 16, 2026

Description

The Neighbor Discovery (ND) protocol implementation in Cisco IOS on unspecified switches allows remote attackers to bypass the Router Advertisement Guarding functionality via a fragmented IPv6 packet in which the Router Advertisement (RA) message is contained in the second fragment, as demonstrated by (1) a packet in which the first fragment contains a long Destination Options extension header or (2) a packet in which the first fragment contains an ICMPv6 Echo Request message.

Metrics

CVSS 2.0 5.0/10AV:N/AC:L/Au:N/C:N/I:P/A:N

Weakness enumeration

CWE-16

Affected software

No affected versions have been published.

Timeline

Published
Jun 9, 2011
Last modified
Jun 16, 2026
NVD status
Modified

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CVE-2011-2395: Medium severity, CVSS 5.0 | Vulnix