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Critical Fortinet FortiMail 0-Day Vulnerability Actively Exploited in Attacks
Fortinet has warned that attackers are actively exploiting a critical FortiMail zero-day vulnerability, putting exposed email security systems at risk. Tracked as CVE-2026-104286, the flaw carries a CVSS score of 9.8 and allows attackers without login credentials to write files on affected devices through specially crafted HTTP or HTTPS requests. Fortinet published advisory FG-IR-26-175 on […] The post Critical Fortinet FortiMail 0-Day Vulnerability Actively Exploited in Attacks appeared first on Cyber Security News.
Fortinet has warned that attackers are actively exploiting a critical FortiMail zero-day vulnerability, putting exposed email security systems at risk. Tracked as CVE-2026-104286, the flaw carries a CVSS score of 9.8 and allows attackers without login credentials to write files on affected devices through specially crafted HTTP or HTTPS requests. Fortinet published advisory FG-IR-26-175 on October 1, 2026, and…
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