A Cross-Site Scripting vulnerability in Fortinet FortiOS versions 5.4.0 through 5.4.4 and 5.6.0 allows attackers to execute unauthorized co…

published 2017-09-12 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-12272

cvss: 5.4; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 7.7%; EPSS 7.7% chance of exploitation in 30 days, percentile 94%
public exploits: 1; Exploit-DB, plus a Nuclei check

A Cross-Site Scripting vulnerability in Fortinet FortiOS versions 5.4.0 through 5.4.4 and 5.6.0 allows attackers to execute unauthorized code or commands via the filter input in "Applications" under FortiView.

Timeline

2017-07-28 First public exploit (EDB-42388)
2017-09-12 Published

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-10-23)

Exploit prediction

7.68% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-42388 Fortinet FortiOS < 5.6.0 - Cross-Site Scripting webapps, 2017-07-28
Nuclei template FortiOS 5.4.0 to 5.6.0 - Cross-Site Scripting nuclei detection template

CVSS scores

assigned by	version	score	vector
NVD	3.0	5.4	CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected products

Fortinet, Inc. Fortinet FortiOS

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

Technology feeds

Fortinet rss critical rss

References

exploit-db.com /exploits/42388/
exploit, third-party-advisory, vdb-entry
fortiguard.com /advisory/FG-IR-17-104
mitigation, vendor-advisory
securityfocus.com /bid/100009
vdb-entry, third-party-advisory
securitytracker.com /id/1039020
vdb-entry, third-party-advisory

Sources

CVE List CVE-2017-3131
NVD CVE-2017-3131

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary