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Vulnerabilities / CVE-2026-104286

CVE-2026-104286

Published 2026-10-01 · published (not yet in NVD)

CVE-2026-104286

Exploited in the wild: CISA added it to the Known Exploited Vulnerabilities catalog on 2026-10-01, with a fix-by date of 2026-10-04. Patch it first.

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.

9.8 CRITICAL
CVSS 3.1 · CNA
4.6%
chance of exploitation in the next 30 days (EPSS; higher than 91% of CVEs)

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.

Scores

Affected products

  • Fortinet FortiMail: 8.0.0 to ≤ 8.0.1; 7.6.0 to ≤ 7.6.6; 7.4.0 to ≤ 7.4.8; 7.2.0 to ≤ 7.2.9; 7.0.0 to ≤ 7.0.9

Weakness: CWE-22

1 references (advisories, patches, write-ups)

Sources: CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.

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