Is CVE-2017-14190 being actively exploited?

CVE-2017-14190 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2017-14190?

CVE-2017-14190 has a CVSS 3.0 base score of 6.1 (MEDIUM).

CVE-2017-14190

MEDIUM · CVSS 6.1EPSS 1.1%EU EUVD

A Cross-site Scripting vulnerability in Fortinet FortiOS 5.6.0 to 5.6.2, 5.4.0 to 5.4.7, 5.2 and earlier, allows attacker to inject arbitrary web script or HTML via maliciously crafted "Host" header in user HTTP requests.

Key facts

CVSS score: 6.1 (v3.0)
Severity: MEDIUM
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
EPSS score: 1.1% (64th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2017-5700)
Published: January 29, 2018
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2017-5700 in the EU Vulnerability Database. Last updated in EUVD on October 25, 2024.

View on the EU Vulnerability Database

Affected products

fortinet / fortios

Certified products that may be affected

4 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

FortiOS 5.6 - Fortinet, Inc. - FIPS 140 3639 - historical
FortiOS 5.2 - Fortinet, Inc. - FIPS 140 2765 - historical
FortiOS™ - Fortinet, Inc. - FIPS 140 1754 - historical
FortiOS - Fortinet, Inc. - FIPS 140 1431 - historical

References

http://www.securityfocus.com/bid/102779(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1040284(Third Party Advisory, VDB Entry)
https://fortiguard.com/advisory/FG-IR-17-262(Mitigation, Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain