Ref# ADV2026_65 | Date: Feb 12th 2026

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Fortinet published a security advisory highlighting vulnerabilities in the following products on February 10, 2026. It is recommended that you take the necessary precautions by ensuring your products are always updated.

• FortiAuthenticator 6.6 – versions 6.6.0 to 6.6.6
• FortiAuthenticator 6.5 – all versions
• FortiAuthenticator 6.4 – all versions
• FortiAuthenticator 6.3 – all versions
• FortiClientWindows 7.4 – versions 7.4.0 to 7.4.4
• FortiClientWindows 7.2 – versions 7.2.0 to 7.2.12
• FortiClientWindows 7.0 – all versions
• FortiOS 7.6 – versions 7.6.0 to 7.6.4
• FortiOS 7.4 – versions 7.4.0 to 7.4.10
• FortiOS 7.2 – all versions
• FortiOS 7.0 – all versions
• FortiOS 6.4 – all versions
• FortiSandbox 5.0 – version 5.0 to 5.1
• FortiSandbox 4.4 – version 4.4.0 to 4.4.7
• FortiSandbox 4.2 – all versions
• FortiSandbox 4.0 – all versions

For more information on these updates, you can follow this URL:

• Fortinet PSIRT Advisories

The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary.

PDF Download: Fortinet Security Advisory

References

• Fortinet Security Advisory (n.d). Retrieved from Fortinet. https://www.fortiguard.com/psirt?filter=1&version=&severity=5&severity=4&severity=3&severity=2
• Fortinet Security Advisory (February 10th, 2026). Retrieved from Canadian Centre for Cyber Security. https://www.cyber.gc.ca/en/alerts-advisories/fortinet-security-advisory-av26-109