CVE-2016-1409

Name: CVE-2016-1409
Creator: NVD / NIST
Published: 2016-05-29T22:59:01.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.82%

Last modified Jun 17, 2026

CVE-2016-1409 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.82% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

3.82%

88.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cisco	Ios	12.0\(1\)
Cisco	Ios	12.0\(1\)db
Cisco	Ios	12.0\(1\)s
Cisco	Ios	12.0\(1\)t
Cisco	Ios	12.0\(1\)t1
Cisco	Ios	12.0\(1\)xa
Cisco	Ios	12.0\(1\)xa1
Cisco	Ios	12.0\(1\)xa2
Cisco	Ios	12.0\(1\)xa3
Cisco	Ios	12.0\(1\)xa4
Cisco	Ios	12.0\(1\)xb
Cisco	Ios	12.0\(1\)xb1
Cisco	Ios	12.0\(1\)xe
Cisco	Ios	12.0\(1a\)
Cisco	Ios	12.0\(2\)
Cisco	Ios	12.0\(2\)db
Cisco	Ios	12.0\(2\)s
Cisco	Ios	12.0\(2\)t
Cisco	Ios	12.0\(2\)t1
Cisco	Ios	12.0\(2\)xc
Cisco	Ios	12.0\(2\)xc1
Cisco	Ios	12.0\(2\)xc2
Cisco	Ios	12.0\(2\)xd
Cisco	Ios	12.0\(2\)xd1
Cisco	Ios	12.0\(2\)xe
Cisco	Ios	12.0\(2\)xe1
Cisco	Ios	12.0\(2\)xe2
Cisco	Ios	12.0\(2\)xe3
Cisco	Ios	12.0\(2\)xe4
Cisco	Ios	12.0\(2\)xf
Cisco	Ios	12.0\(2\)xf1
Cisco	Ios	12.0\(2\)xf2
Cisco	Ios	12.0\(2\)xh
Cisco	Ios	12.0\(2\)xh1
Cisco	Ios	12.0\(2a\)
Cisco	Ios	12.0\(2a\)t1
Cisco	Ios	12.0\(2b\)
Cisco	Ios	12.0\(3\)
Cisco	Ios	12.0\(3\)db
Cisco	Ios	12.0\(3\)dc
Cisco	Ios	12.0\(3\)dc1
Cisco	Ios	12.0\(3\)s
Cisco	Ios	12.0\(3\)t
Cisco	Ios	12.0\(3\)t1
Cisco	Ios	12.0\(3\)t2
Cisco	Ios	12.0\(3\)t3
Cisco	Ios	12.0\(3\)xe
Cisco	Ios	12.0\(3\)xe1
Cisco	Ios	12.0\(3\)xe2
Cisco	Ios	12.0\(3\)xg

Showing 50 of 4891 affected configurations. See NVD for the full list.

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160525-ipv6Vendor Advisory
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160824-01-ipv6-enThird Party Advisory
http://www.securityfocus.com/bid/90872Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1035962Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1035963Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1035964Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1035965Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1036651
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160525-ipv6Vendor Advisory
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160824-01-ipv6-enThird Party Advisory
http://www.securityfocus.com/bid/90872Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1035962Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1035963Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1035964Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1035965Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1036651

Timeline

Published: May 29, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-1409?

How severe is CVE-2016-1409?

Severity scoring for CVE-2016-1409 is pending analysis. The EPSS model estimates a 3.82% probability of exploitation in the next 30 days.

How do I fix CVE-2016-1409?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-1409?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST