What is CVE-2016-1351?

CVE-2016-1351 is a high-severity vulnerability in Cisco iOS, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-03-26.

How severe is CVE-2016-1351?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in Cisco iOS

CVE-2016-1351

The Locator/ID Separation Protocol (LISP) implementation in Cisco IOS 15.1 and 15.2 and NX-OS 4.1 through 6.2 allows remote attackers to cause a denial of service (device reload) via a crafted header in a packet, aka Bug ID CSCuu64279.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2016-03-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.037 (89.4th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.037 · newest: 0.037 · change: 0.000

Affected products

Cisco iOS — versions 15.2(1)sy, 15.1\(1\)sy5, 15.1(2)sy2
Cisco Nx-Os — versions 5.2(1), 4.2(8), 4.1(3)

Weakness classification (CWE)

References

www.securitytracker.com/id/1035384 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
www.securitytracker.com/id/1035383 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160323… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2016-1351?: CVE-2016-1351 is a high-severity vulnerability in Cisco iOS, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-03-26.
How severe is CVE-2016-1351?: High severity. CVSS v3 base score is 7.5 out of 10.