CVE-2026-104286

added 2026-10-01remediate by 2026-10-04

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.

EU KEVflagged by CNWreported 2026-10-01

Improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests. Customers are urged to disable the IBE feature support or disable access to the FortiMail management interface from the internet or limit the access only from trusted private network.