New FortiOS firmware patches released

Maybe you have already noticed (or maybe you have been informed by our Fortinet Firmware Update mailing list) that Fortinet has released of some new FortiOS patches on Feb. 7, 2024. To be more precise – all Fortinet minor and major versions that are running on Fortigate models that are…

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How to Recertify the New Fortinet Certifications

Last Update 11.08.2025: It was not so long ago that Fortinet replaced the old NSE levels with new certification levels. We already wrote an article about this last year in this blog post. Nevertheless, let’s take a look at how you can recertify our new Fortinet certifications: Basically, recertification is…

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FortiGate: Deny-Policies for SD-WAN members

SD-WAN is a cool feature to configure redundant internet access. But it was designed with load-balancing in mind and this brings some challenges to specific use cases. As an example, while you can use SD-WAN rules to define the preferred path for a specific application/system, it won’t prevent that the…

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FortiGuard Servers are not reachable

Last Update 24.06.2025 Update – 30. Oktober 2023: We received feedback from our partners that the issue probably occurred again today. Fortinet confirmed the issue, here is their response: Few cases have been reported to us with this issue during the weekend, this seems to be issue with Fortiguard anycast…

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FortiOS 7.4.1 is Released

Last Friday the first patch for FortiOS 7.4 has been released. As always with a brand new minor or major FortiOS version a lot of issues have been resolved and a lot of new features have been introduced. No Security Fabric root for FG60E/F anymore Interestingly, however, we found an…

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CVE-2023-27997 – FortiOS & FortiProxy – Heap buffer overflow in sslvpn pre-authentication

Please note the vulnerabilities in Fortinet products published in June. In particular, we would like to mention the vulnerability in FortiOS, which affects SSLVPN access and poses a major threat with a CVSSv3 score of 9.2. Fortinet PSIRT: https://www.fortiguard.com/psirt/FG-IR-23-097CVE: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-27997 Affected are FortiOS versions 6.0 to 7.2. Fortinet has already…

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