What is CVE-2017-14182?

CVE-2017-14182 is a medium-severity vulnerability in Fortinet Fortios, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2017-10-27.

How severe is CVE-2017-14182?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Fortinet Fortios

CVE-2017-14182

A Denial of Service (DoS) vulnerability in Fortinet FortiOS 5.4.0 to 5.4.5 allows an authenticated user to cause the web GUI to be temporarily unresponsive, via passing a specially crafted payload to the 'params' parameter of the JSON web API.

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

Published 2017-10-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Fortinet Fortios — versions FortiOS 5.4.5, 5.4.4, 5.4.3, 5.4.2, 5.4.1, 5.4.0
Fortinet Fortios — versions 5.4.0, 5.4.1, 5.4.2

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

code610.blogspot.com/2017/10/patch-your-fortinet-cve-2017-14182.html (Third Party Advisory)
www.securitytracker.com/id/1039678 (VDB Entry, Third Party Advisory, vdb-entry)
fortiguard.com/psirt/FG-IR-17-206 (Vendor Advisory)
www.securityfocus.com/bid/101559 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-14182?: CVE-2017-14182 is a medium-severity vulnerability in Fortinet Fortios, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2017-10-27.
How severe is CVE-2017-14182?: Medium severity. CVSS v3 base score is 6.5 out of 10.