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CVE-2016-1409
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…
High7.5EPSS 3.9%
- Published
- Updated
- Reserved
- Assigned by
- cisco
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.
Timeline
ID reserved
By cisco
- 5 months later
· 5 months later
Published
- 8 years later
· 8 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 3.9% · top 9.7% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
References (8)
- 20160525 Cisco Products IPv6 Neighbor Discovery Crafted Packet Denial of Service Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 1035964 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 90872 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1035965 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 1035962 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 1036651 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160824-01-ipv6-en (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1035963 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2016-1409)Record last updated .