FortiMail zero-day exploited in attacks as CISA urges immediate patching
Brief
A critical zero-day vulnerability in Fortinet FortiMail is being actively exploited in the wild, prompting the US Cybersecurity and Infrastructure Security Agency (CISA) to add the flaw to its Known Exploited Vulnerabilities (KEV) catalog. Tracked as CVE-2026-104286 and rated 9. 8 (Critical) on the CVSS scale, the vulnerability allows unauthenticated attackers to write arbitrary files to …
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