CVE-2016-1409

high-risk

Published 2016-05-29

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.

Do I need to act?

4.9% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (20)

Ios

Affected Vendors

Cisco

References (16)

Vendor Advisory http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20...

Third Party Advisory http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160824-01-ipv6-en

Third Party Advisory http://www.securityfocus.com/bid/90872

Third Party Advisory http://www.securitytracker.com/id/1035962

Third Party Advisory http://www.securitytracker.com/id/1035963

Third Party Advisory http://www.securitytracker.com/id/1035964

Third Party Advisory http://www.securitytracker.com/id/1035965

http://www.securitytracker.com/id/1036651

Vendor Advisory http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20...

Third Party Advisory http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160824-01-ipv6-en

Third Party Advisory http://www.securityfocus.com/bid/90872

Third Party Advisory http://www.securitytracker.com/id/1035962

Third Party Advisory http://www.securitytracker.com/id/1035963

Third Party Advisory http://www.securitytracker.com/id/1035964

Third Party Advisory http://www.securitytracker.com/id/1035965

http://www.securitytracker.com/id/1036651

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high-risk

Severity 26/34 · High

Exploitability 8/34 · Low

Exposure 33/34 · Critical