Solution update 23.04.2026 Based on the instructions provided by SEPPmail, if executed the day before the SwissSign revocation process on Wednesday 22.04.2026 at 15:00 GMT+2, the SEPPmail appliance should have renewed all affected certificates upfront and hence the revocation of the invalid certificates has no impact. Should you have missed…
Sometimes it happens, that FortiOS is not updating it’s antivirus signatures anymore. The monitoring software, a monitoring script or a very attentive administrator is then reporting this problem to the FortiGate admin to fix it. This guide will lead you through the steps to troubleshoot this.
Last week Fortinet has released a critical PSIRT-Advisory “Improper check for certificate revocation vulnerability” Unfortunately the article does not give exact information regarding the background or the solution and we couldn’t find further information about the issue, either. Maybe you have more information?
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