CVE-2026-104286
Fortinet · published 2026-10-01
Source record Collected from the National Vulnerability Database (NVD)
CISA Known Exploited Vulnerabilities
CISA lists this CVE as known exploited (added 2026-10-01).
- CISA's name for it: Fortinet FortiMail Path Traversal Vulnerability
- CISA's description: Fortinet FortiMail contains a path traversal and an improper neutralization of NULL byte or NULL character vulnerability that may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests.
- Known ransomware campaign use, per CISA: Unknown
Source: CISA KEV catalog (CC0 1.0).
Description
Description by Fortinet, Inc. via the CVE Program.
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.
Status at the source
- NVD status: Analyzed
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | FortiMail | 8.0.0: affected 7.6.0 – 7.6.5 and earlier: affected 7.4.0 – 7.4.6 and earlier: affected 7.2.0 – 7.2.9 and earlier: affected 7.0.0 – 7.0.9 and earlier: affected |
Products named in NVD's CPE match criteria (1)
cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 9.8 CRITICAL — as published by Fortinet, Inc. (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: active · Automatable: yes · Technical impact: total
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://fortiguard.fortinet.com/psirt/FG-IR-26-175
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-104286
Source dates: published 2026-10-01, last changed 2026-10-07. DeSpy's copy of this version is dated 2026-10-07.
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