FortiOS 5.4.1 Release Notes

Resolved Issues

The following issues have been fixed in version 5.4.1. For inquires about a particular bug, please contact CustomerService & Support.


Bug ID Description
278240 100% CPU usage when system is idle; signal 14 occurs.
302818 FortiSandbox analytic verdict not logged in UTM log.
368258 Fix upload chunked scan and learn file name from URL in decoded format.


Bug ID Description
366274 Request an update on the country code in CSR.
306645 Cannot use SCEP(https) to load the subCA certificate.
301574 MSCHAP RADIUS VSAs are packed in the same AVP.
288440 Status of expired CA certificate in Certificate GUI is still valid.


Bug ID Description
277594 Proxyworker stops working when using IMAPS or POP3 servers for email.
365320 Files and file names are incorrectly identified in a MIME message.
175146 When SMTP protocol checks for the flag local-override; they were missing in several places.
369307 Remove fake file names when DLP file names matches.


Bug ID Description


WAD daemon may crash when enabling WAD debug.
304432 Protect server does not work when enabling the Proxy AV and deep inspection.
300491 User can accidentally delete/change policies configured from the GUI using Policy ID command gui-advanced-policy enable.
368191 FTP-Active session does not work when the session-helper does not translate the FTP PORT information.
357522 Improve the multicast policy handling in NAT mode.
365937 Browser does not load objects if the VS persistence is set to http-cookie.
294263 Traffic log reports the wrong service for dropped traffic.
303962 VIP IP unexpectedly responds to fgfm requests.

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About Mike

Michael Pruett, CISSP has a wide range of cyber-security and network engineering expertise. The plethora of vendors that resell hardware but have zero engineering knowledge resulting in the wrong hardware or configuration being deployed is a major pet peeve of Michael's. This site was started in an effort to spread information while providing the option of quality consulting services at a much lower price than Fortinet Professional Services. Owns PacketLlama.Com (Fortinet Hardware Sales) and Office Of The CISO, LLC (Cybersecurity consulting firm).

3 thoughts on “FortiOS 5.4.1 Release Notes

  1. David

    FYI. I ran into a terrible problem using a Fortigate VM00. 5.4.1 will not run because the virtual appliance only has 1GB of memory available. Fortinet was nice enough to diagnose the problem, but really does not have an easy way of upgrading to the 2GB virtual appliance.

  2. Pablo

    Problems of download speed, I have a fortigate 30e and I have problems in the download speed 4.2 mbps, instead in upload speed is correct 89.55 mbps, I do not know where the problem may come from. I have version 5.4.1 build1064. You can help me.


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