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Fortinet Discovers New Zero-Day Vulnerability Under Exploitation

First seen 2 Dec 2025, 18:33 UTC • •

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ThreatCluster •March 12, 2026 at 13:27 UTC

Fortinet has identified a new zero-day vulnerability, CVE-2025-58034, that is currently being exploited in attacks. This flaw affects FortiWeb and is part of a broader trend of Fortinet vulnerabilities being targeted in cyber-espionage and ransomware incidents, including those linked to Chinese actors in February 2025.

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