Last Update: 26.10.2026, 09:25 CET
At the 22nd of October 2026, Fortinet has released critical out-of-band security updates for FortiMail and FortiAuthenticator, with coordinated updates for FortiOS, FortiManager, and FortiAnalyzer. Fortinet recommended to upgrade immediately.
Chronological Sequence
The FortiGate 30G unit running FortiOS 7.6.7 may encounter a “signature verification” failure when upgrading to FortiOS 7.6.8. Fortinet has released an interim build of FortiOS 7.6.7 (#8737) for this model to resolve this issue and allow the upgrade to FortiOS 7.6.8. Please contact your distributor or Fortinet Support to obtain the firmware file.
The updates mentioned are not yet fully available for automatic upgrade on the FortiOS Admin GUI or the FortiGate Cloud. If the updates are not visible yet, they need to be uploaded and installed manually.
In FortiGate Cloud, you need a ‘FortiGate Cloud Standard Subscription’ to manually upload firmware files; a ‘FortiGate Cloud Service Basic Subscription’ does not allow this. Documentation can be found here.
Customers who are using FortiOS 7.2 and do not have an active FortiCare Elite contract on their unit are not permitted to upgrade to FortiOS 7.2.14. Fortinet recommends upgrading to a newer branch. However, some of our customers have reported successful updates even without an active FortiCare Elite contract.
22.10.2026 19:20 CET Update: FortiOS 8.0.2 has been released for manual Download on support.fortinet.com!
22.10.2026 20:05 CET Update: FortiOS 7.6.8 has been released for manual Download on support.fortinet.com!
22.10.2026 21:15 CET Update: FortiOS 7.4.13 has been released for manual Download on support.fortinet.com!
23.10.2026 08:45 CET Update: FortiOS 7.2.14 has been released for manual Download on support.fortinet.com!
Detailed Information
More detailed information has been published under https://www.fortinet.com/blog/ciso-collective/fortinet-releases-security-hardening-release-for-multiple-products
Identified via Fortinet’s AI-assisted testing program, these vulnerabilities demand immediate attention. Because adversaries now use AI to reverse-engineer patches and chain minor flaws into critical exploits within hours, unpatched edge devices are at extreme risk.
What you need to know
- Scope: All supported major releases (8.0, 7.6, 7.4, 7.2) of FortiOS, FortiManager, FortiAnalyzer, FortiMail, and FortiAuthenticator.
- Impact: Potentially a full system compromise. (No details published yet)
- Action Required: Execute emergency patching procedures immediately. Do not wait for regular maintenance windows.
- Mitigations: If immediate patching is impossible, isolate management interfaces out-of-band, move resources behind VPN/SASE, or apply virtual patches.
Affected and Fixed Versions
| Product | Affected Versions | Fixed Version |
| FortiOS 8.0 FortiOS 7.6 FortiOS 7.4 FortiOS 7.2 | 8.0.0–8.0.1 7.6.0–7.6.7 7.4.0–7.4.12 7.2.0–7.2.13 | 8.0.2 (Release Notes) or above 7.6.8 (Release Notes) or above 7.4.13 (Release Notes) or above 7.2.14 (Release Notes) or above |
| FortiAnalyzer 8.0 FortiAnalyzer 7.6 FortiAnalyzer 7.4 FortiAnalyzer 7.2 | 8.0.0–8.0.1 7.6.0–7.6.7 7.4.0–7.4.11 7.2.0–7.2.12 | 8.0.2 or above 7.6.8 or above 7.4.12 or above 7.2.13 or above |
| FortiManager 8.0 FortiManager 7.6 FortiManager 7.4 FortiManager 7.2 | 8.0.0–8.0.1 7.6.0–7.6.7 7.4.0–7.4.11 7.2.0–7.2.12 | 8.0.2 or above 7.6.8 or above 7.4.12 or above 7.2.13 or above |
| FortiAuthenticator 8.0 FortiAuthenticator 6.6 | 8.0.0–8.0.3 6.6.0–6.6.10 | 8.0.4 or above 6.6.11 or above |
| FortiMail 8.0 FortiMail 7.6 FortiMail 7.4 FortiMail 7.2 | 8.0.0–8.0.1 7.6.0–7.6.6 7.4.0–7.4.8 7.2.0–7.2.9 | 8.0.2 or above 7.6.7 or above 7.4.9 or above Upgrade to 7.4 branch or later |
Boll Resellers are free to contact our support team directly for technical assistance or if anomalous activity is suspected – We are here to assist you in securing your infrastructure. Other customers please get in contact with the Fortinet Support.
upgrade von version 7.6.7 auf 7.6.8 kann zu konfigurations Verlust führen..
diese meldung kommt wenn man den upgrade auf einer Fortigate 120G machen möchte….
darf, soll man , oder eher nicht ????
Dear Remo,
Thank you for your comment.
Please note that we do not provide technical support on our blog. I’ve opened a support case for you to follow up this request. We will contact you shortly.
Have a nice day.
Kind regards,
The Boll Tech Team