CVE-2025-31366

At a glance

Severity: MEDIUM 4.5
EPSS: EPSS 0.40 % · percentile 34 (2026-10-27)
State: PUBLISHED
Published: 2025-10-14
Updated: 2026-10-15
Assigner: fortinet
NVD status: Modified

Description

An Improper Neutralization of Input During Web Page Generation vulnerability [CWE-79] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4 all versions, FortiProxy 7.2 all versions, FortiProxy 7.0 all versions, FortiSASE 25.2.a may allow an unauthenticated attacker to perform a reflected cross site scripting (XSS) via crafted HTTP requests.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 4.5	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C	fortinet
CVSS 3.1	MEDIUM 4.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N	NVD · psirt@fortinet.com (Secondary)
CVSS 3.1	MEDIUM 6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-79

European references

ENISA EUVD · EUVD-2025-34239
GCVE · GCVE-0-2025-31366

CERT-FR advisories

CERTFR-2025-AVI-0871 — Multiples vulnérabilités dans les produits Fortinet · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* ≥ 6.4.0 < 7.4.9
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* ≥ 7.6.0 < 7.6.4
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* ≥ 7.0.0 < 7.6.4
cpe:2.3:a:fortinet:fortisase:25.3.40:*:*:*:feature:*:*:*
cpe:2.3:a:fortinet:fortisase:25.3.40:*:*:*:mature:*:*:*

Affected products

Product	Versions
Fortinet · FortiSASE	affected 25.2.a
Fortinet · FortiOS	affected 7.6.0 ≤ 7.6.2 ; affected 7.4.0 ≤ 7.4.7 ; affected 7.2.0 ≤ 7.2.13 ; affected 7.0.0 ≤ 7.0.19 ; affected 6.4.0 ≤ 6.4.16
Fortinet · FortiProxy	affected 7.6.0 ≤ 7.6.3 ; affected 7.4.0 ≤ 7.4.8 ; affected 7.2.0 ≤ 7.2.16 ; affected 7.0.0 ≤ 7.0.23

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD