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VulnerabilitiesNov 11, 2026

Fortinet Patches Nearly 100 Vulnerabilities

Fortinet patched nearly 100 vulnerabilities, including 17 critical flaws, across its product line.

Fortinet has released 89 security advisories addressing nearly 100 vulnerabilities, with approximately 17 classified as critical. These critical flaws could allow for arbitrary code execution, authentication bypass, account takeover, and other severe impacts. The company noted that the integration of AI models into its security testing has increased its efficiency in discovering these defects.

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The lesson from this incident

Full lesson

Fortinet disclosed approximately 100 vulnerabilities across its product line, with around 17 classified as critical — capable of enabling arbitrary code execution, authentication bypass, and account takeover. Organizations running unpatched Fortinet appliances are exposed to severe risk, as network security devices are high-value targets that sit at the perimeter of enterprise environments. The scale of this release underscores how even trusted security vendors can carry significant vulnerability debt. Prompt patching is essential because threat actors routinely weaponize Fortinet vulnerabilities within days of public disclosure, as seen in past Fortinet CVE exploits.

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Indicators of Compromise

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  • malware — Fortinet2Shell

Entities

Fortinet (vendor)FortiMail (product)FortiAuthenticator (product)FortiOS (product)FortiManager (product)FortiAnalyzer (product)