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CVE-2016-1409

7.5 · HIGH

The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS XE 2.1 through 3.17S, IOS XR 2.0.0 through 5.3.2, and NX-OS allows remote attackers to cause a denial of service (…

Published May 29, 2016CWE-20EPSS 3.90%

Overview

CVE-2016-1409 is a high-severity vulnerability. It was published on May 29, 2016 and has a CVSS 3.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Cisco IOS XE 2.1 through 3.17S, IOS XR 2.0.0 through 5.3.2, and NX-OS allows remote attackers to cause a denial of service (packet-processing outage) via crafted ND messages, aka Bug ID CSCuz66542, as exploited in the wild in May 2016.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160525-ipv6Refwww.huawei.com/en/psirt/security-advisories/huawei-sa-20160824-01-ipv6-enRefwww.securityfocus.com/bid/90872Refwww.securitytracker.com/id/1035962Refwww.securitytracker.com/id/1035963Refwww.securitytracker.com/id/1035964Refwww.securitytracker.com/id/1035965Refwww.securitytracker.com/id/1036651Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160525-ipv6Refwww.huawei.com/en/psirt/security-advisories/huawei-sa-20160824-01-ipv6-en

How CyberStrike helps

Frequently asked questions

What is CVE-2016-1409?

CVE-2016-1409 is a high-severity vulnerability. It was published on May 29, 2016 and has a CVSS 3.0 base score of 7.5 (HIGH).

How severe is CVE-2016-1409?

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-1409?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-1409?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-1409 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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