CERT-In Issues Critical Advisory for FortiOS and FortiProxy Multiple Vulnerabilities

• 04 June, 2026
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The Indian Computer Emergency Response Team (CERT-In) issued a critical severity advisory (CIAD-2026-00XX) regarding multiple vulnerabilities in Fortinet FortiOS and FortiProxy.

Affected Products

• FortiOS 7.6.x — all versions below 7.6.0
• FortiOS 7.4.x — all versions below 7.4.5
• FortiOS 7.2.x — all versions below 7.2.9
• FortiProxy 7.4.x — all versions below 7.4.3
• FortiProxy 7.2.x — all versions below 7.2.9

Recommended Actions

• Immediately upgrade FortiOS to version 7.4.5 or later
• Upgrade FortiProxy to version 7.4.3 or later
• Restrict management access to trusted IP addresses only
• Enable multi-factor authentication on all administrative accounts

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