CVE-2026-104286

At a glance

Severity: CRITICAL 9.8
Exploitation: Known exploited (CISA KEV) · added 2026-10-01
Exploited per ENISA since 2026-10-01
EPSS: EPSS 4.57 % · percentile 92 (2026-10-27)
State: PUBLISHED
Published: 2026-10-01
Updated: 2026-10-07
Assigner: fortinet
NVD status: Analyzed

Description

An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2.0 through 7.2.9 may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C	fortinet
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · psirt@fortinet.com (Secondary)

Weaknesses (CWE)

CWE-22

European references

ENISA EUVD · EUVD-2026-91042
GCVE · GCVE-0-2026-104286

CERT-FR advisories

CERTFR-2026-AVI-1257 — Vulnérabilité dans Fortinet FortiMail · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:* ≥ 7.2.0 ≤ 7.4.8
cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:* ≥ 7.6.0 ≤ 7.6.6
cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:* ≥ 8.0.0 ≤ 8.0.1

Affected products

Product	Versions
Fortinet · FortiMail	affected 8.0.0 ; affected 7.6.0 ≤ 7.6.5 ; affected 7.4.0 ≤ 7.4.6 ; affected 7.2.0 ≤ 7.2.9 ; affected 7.0.0 ≤ 7.0.9

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
CISA Known Exploited Vulnerabilities	CC0 1.0
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