CVE-2026-104286
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…
- Severity: Critical
- CVSS 9.8
- EPSS 2.20%
- On CISA KEV
- Public exploit
- P1 · Patch now
Why P1: on CISA KEV.
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.
CISA Known Exploited Vulnerability
Added 2026-10-01, remediation due 2026-10-04. Ransomware use: Unknown. Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for…
Affected products
- fortinet fortimail >= 7.2.0, <= 7.4.8
- fortinet fortimail >= 7.6.0, <= 7.6.6
- fortinet fortimail >= 8.0.0, <= 8.0.1
- Fortinet FortiMail Version details not specified by CISA
Weakness
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- NVD record NVD
- CVE Program record CVE Program
- Reference NVD
- Reference NVD
- GitHub security advisory GitHub
- CISA KEV catalog CISA