9.8
Critical
CVE-2026-104286 Fortinet FortiMail Path Traversal Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
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 evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Ransomware campaigns
Not observed so far
Weakness
CWE-22, CWE-158
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, FortiMail 7.0 all versions may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests.
Affected products and versions
Other CVEs of FortiMail
The 24 CVEs of FortiMail →
CVE-2025-57739
An improper neutralization of special elements used in an SQL Command ("SQL Injection") vulnerability [CWE-89]…
7.7
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CVE-2025-53681
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6.3
Medium
CVE-2025-55717
A cleartext storage of sensitive information vulnerability [CWE-312] vulnerability in Fortinet FortiMail 7.6.0 through…
3.8
Low
CVE-2025-54972
An improper neutralization of crlf sequences ('crlf injection') vulnerability in Fortinet FortiMail 7.6.0 through 7.6.3,…
3.9
Low