What is CVE-2016-1403?

CVE-2016-1403 is a high-severity vulnerability in Cisco Ip Phone 8800 Series Firmware, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2016-06-04.

How severe is CVE-2016-1403?

High severity. CVSS v3 base score is 7.8 out of 10.

Improper input validation in Cisco Ip Phone 8800 Series Firmware

CVE-2016-1403

CISCO IP 8800 phones with software 11.0.1 and earlier allow local users to gain privileges for OS command execution via crafted CLI commands, aka Bug ID CSCuz03005.

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

Published 2016-06-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (42.3th percentile), scored 2026-10-21.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.005 · change: -0.001

Affected products

Cisco Ip Phone 8800 Series Firmware — versions 11.0\(1\), 10.2(1), 10.2\(1\)

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160603… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2016-1403?: CVE-2016-1403 is a high-severity vulnerability in Cisco Ip Phone 8800 Series Firmware, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2016-06-04.
How severe is CVE-2016-1403?: High severity. CVSS v3 base score is 7.8 out of 10.