FortiOS 5.4.6 Release Notes


This document provides the following information for FortiOS 5.4.6 build 1165:

FortiGate FG-30D, FG-30E, FG-30D-POE, FG-50E, FG-51E, FG-60D, FG-60D-POE, FG-70D,

FG-70D-POE, FG-80C, FG-80CM, FG-80D, FG-90D, FG-90D-POE, FG-92D, FG94D-POE, FG-98D-POE, FG-100D, FG-140D, FG-140D-POE, FG- 200D, FG-200DPOE, FG-240D, FG-240D-POE, FG-280D-POE, FG-300D, FG-400D, FG-500D, FG-

600C, FG-600D, FG-800C, FG-800D, FG-900D, FG-1000C, FG-1000D, FG-1200D,

FG-1500D, FG-1500DT, FG-3000D, FG-3100D, FG-3200D, FG-3240C, FG-3600C,

FG-3700D, FG-3700DX, FG-3800D, FG-3810D, FG-3815D, FG-5001C, FG-5001D

FortiWiFi FWF-30D, FWF-30E, FWF-30D-POE, FWF-50E, FWF-51E, FWF-60D, FWF-60D-POE, FWF-80CM, FWF-81CM, FWF-90D, FWF-90D-POE
FortiGate Rugged FGR-60D, FGR-90D

FortiOS 5.4.6 supports the additional CPU cores through a license update on the following VM models:

l     VMware 16, 32, unlimited l KVM 16

l     Hyper-V 16, 32, unlimited

Pay-as-you-go images FOS-VM64, FOS-VM64-KVM
FortiOS Carrier FortiOS Carrier 5.4.6 images are delivered upon request and are not available on the customer support firmware download page.

l Special Notices l Upgrade Information l Product Integration and Support l Resolved Issues l Known Issues l Limitations

See the Fortinet Document Library for FortiOS documentation.

Supported models

FortiOS 5.4.6 supports the following models.

Introduction                                                                                                                              Supported models

Special branch supported models

The following models are released on a special branch of FortiOS 5.4.6. To confirm that you are running the correct build, run the CLI command get system status and check that the Branch point field shows 1165.

FGR-30D is released on build 7686.
FGR-35D is released on build 7686.
FGR-30D-A is released on build 7686.
FG-30E-MI is released on build 6406.
FG-30E-MN is released on build 6406.
FWF-30E-MI is released on build 6406.
FWF-30E-MN is released on build 6406.
FWF-50E-2R is released on build 7688.
FG-52E is released on build 6401.
FG-60E is released on build 6408.
FWF-60E is released on build 6408.
FG-61E is released on build 6408.
FWF-61E is released on build 6408.
FG-80E is released on build 6408.
FG-80E-POE is released on build 6408.
FG-81E is released on build 6408.
FG-81E-POE is released on build 6408.
FG-90E is released on build 6405.
FG-90E-POE is released on build 6405.
FG-91E is released on build 6405.
FWF-92D is released on build 7687.
FG-100E is released on build 6408.


What’s new in FortiOS 5.4.6                                                                                                                Introduction

FG-100EF is released on build 6408.
FG-101E is released on build 6408.
FG-140E is released on build 6408.
FG-140E-POE is released on build 6408.
FG-200E is released on build 6402.
FG-201E is released on build 6402.
FG-300E is released on build 4075.
FG-301E is released on build 4075.
FG-500E is released on build 4075.
FG-501E is released on build 4075.
FG-2000E is released on build 6403.
FG-2500E is released on build 6403.
FG-3960E is released on build 6404.
FG-3980E is released on build 6404.
FG-5001E is released on build 6400.
FG-VM64-AZURE is released on build 6399.
FG-VM64-AZUREONDEMAND is released on build 6399.

What’s new in FortiOS 5.4.6

For a detailed list of new features and enhancements that have been made in FortiOS 5.4.6, see the What’s New forFortiOS 5.4.6 document available in the Fortinet Document Library.

Special Notices

Built-In Certificate

FortiGate and FortiWiFi D-series and above have a built in Fortinet_Factory certificate with an RSA 2048-bit key; and FortiOS supports DH group 14 for key-exchange.

Default log setting change

For FG-5000 blades, log disk is disabled by default. It can only be enabled via CLI. For all 2U & 3U models (FG-3600/FG-3700/FG-3800), log disk is also disabled by default. For all 1U models and desktop models that supports SATA disk, log disk is enabled by default.

FortiAnalyzer Support

In version 5.4, encrypting logs between FortiGate and FortiAnalyzer is handled via SSL encryption. The IPsec option is no longer available and users should reconfigure in GUI or CLI to select the SSL encryption option as needed.


SSL/HTTPS/SMTPS/IMAPS/POP3S options were removed from server-load-balance on low end models below FG-100D except FG-80C and FG-80CM.

FortiGate and FortiWiFi-92D Hardware Limitation

FortiOS 5.4.0 reported an issue with the FG-92D model in the Special Notices > FG-92D High Availability in Interface Mode section of the release notes. Those issues, which were related to the use of port 1 through 14, include:

  • PPPoE failing, HA failing to form l IPv6 packets being dropped l FortiSwitch devices failing to be discovered
  • Spanning tree loops may result depending on the network topology

FG-92D and FWF-92D do not support STP. These issues have been improved in FortiOS 5.4.1, but with some side effects with the introduction of a new command, which is enabled by default:

config system global set hw-switch-ether-filter <enable | disable>

FG-900D and FG-1000D                                                                                                               Special Notices

When the command is enabled:

  • ARP (0x0806), IPv4 (0x0800), and VLAN (0x8100) packets are allowed l BPDUs are dropped and therefore no STP loop results l PPPoE packets are dropped l IPv6 packets are dropped l FortiSwitch devices are not discovered l HA may fail to form depending the network topology

When the command is disabled:

  • All packet types are allowed, but depending on the network topology, an STP loop may result

FG-900D and FG-1000D

CAPWAP traffic will not offload if the ingress and egress traffic ports are on different NP6 chips. It will only offload if both ingress and egress ports belong to the same NP6 chip.


CAPWAP Tunnel over the GRE tunnel (CAPWAP + TP2 card) is not supported.

FortiGate units managed by FortiManager 5.0 or 5.2

Any FortiGate unit managed by FortiManager 5.0.0 or 5.2.0 may report installation failures on newly created VDOMs, or after a factory reset of the FortiGate unit even after a retrieve and re-import policy.

FortiClient Support

Only FortiClient 5.4.1 and later is supported with FortiOS 5.4.1 and later. Upgrade managed FortiClients to 5.4.1 or later before upgrading FortiGate to 5.4.1 or later.

Consider the FortiClient license before upgrading. Full featured FortiClient 5.2 and 5.4 licenses will carry over into FortiOS 5.4.1 and later. Depending on your organization’s needs, you might need to purchase a FortiClient EMS license for endpoint provisioning. Contact your sales representative for guidance on the appropriate licensing for your organization.

The perpetual FortiClient 5.0 license (including the 5.2 limited feature upgrade) will not carry over into FortiOS 5.4.1 and later. You need to purchase a new license for either FortiClient EMS or FortiGate. A license is compatible with 5.4.1 and later if the SKU begins with FC-10-C010.


Special Notices                                                                                FortiClient (Mac OS X) SSL VPN Requirements

FortiClient (Mac OS X) SSL VPN Requirements

When using SSL VPN on Mac OS X 10.8, you must enable SSLv3 in FortiOS.

FortiGate-VM 5.4 for VMware ESXi

Upon upgrading to FortiOS 5.4.6, FortiGate-VM v5.4 for VMware ESXi (all models), no longer supports the VMXNET2 vNIC driver.

FortiClient Profile Changes

With introduction of the Cooperative Security Fabric in FortiOS, FortiClient profiles will be updated on FortiGate. FortiClient profiles and FortiGate are now primarily used for Endpoint Compliance, and FortiClient Enterprise Management Server (EMS) is now used for FortiClient deployment and provisioning.

In the FortiClient profile on FortiGate, when you set the Non-Compliance Action setting to Auto-Update, the

FortiClient profile supports limited provisioning for FortiClient features related to compliance, such as AntiVirus,

Web Filter, Vulnerability Scan, and Application Firewall. When you set the Non-Compliance Action setting to Block or Warn, you can also use FortiClient EMS to provision endpoints, if they require additional other features, such as VPN tunnels or other advanced options. For more information, see the FortiOS Handbook – Security


When you upgrade to FortiOS 5.4.1 and later, the FortiClient provisioning capability will no longer be available in FortiClient profiles on FortiGate. FortiGate will be used for endpoint compliance and Cooperative Security Fabric integration, and FortiClient Enterprise Management Server (EMS) should be used for creating custom FortiClient installers as well as deploying and provisioning FortiClient on endpoints. For more information on licensing of EMS, contact your sales representative.


FortiPresence users must change the FortiGate web administration TLS version in order to allow the connections on all versions of TLS. Use the following CLI command.

config system global set admin-https-ssl-versions tlsv1-0 tlsv1-1 tlsv1-2


Log Disk Usage

Users are able to toggle disk usage between Logging and WAN Optimization for single disk FortiGates.

To view a list of supported FortiGate models, refer to the FortiOS 5.4.0 Feature Platform Matrix.

SSL VPN setting page                                                                                                                   Special Notices

SSL VPN setting page

The default server certificate has been changed to the Fortinet_Factory option. This excludes FortiGateVMs which remain at the self-signed option. For details on importing a CA signed certificate, please see the How to purchase and import a signed SSL certificate document.

FG-30E-3G4G and FWF-30E-3G4G MODEM Firmware Upgrade

The 3G4G MODEM firmware on the FG-30E-3G4G and FWF-30E-3G4G models may require updating. Upgrade instructions and the MODEM firmware have been uploaded to the Fortinet CustomerService & Support site.

Log in and go to Download > Firmware. In the Select Product list, select FortiGate, and click the Download tab. The upgrade instructions are in the following directory:


Use of dedicated management interfaces (mgmt1 and mgmt2)

For optimum stability, use management ports (mgmt1 and mgmt2) for management traffic only. Do not use management ports for general user traffic.


In 5.2, Block page was sent to client with HTTP status code 200 by default. In 5.4 and later, Block page is sent to client with a clearer HTTP status code of 403 Forbidden.

Upgrade Information

Upgrading to FortiOS 5.4.6

FortiOS version 5.4.6 officially supports upgrading from version 5.4.4 and later, and 5.2.10 and later.

When upgrading from a firmware version beyond those mentioned in the Release Notes, a recommended guide for navigating the upgrade path can be found on the Fortinet documentation site.

There is a separate version of the guide describing the safest upgrade path to the latest patch of each of the supported versions of the firmware. To upgrade to this build, go to FortiOS 5.4 Supported Upgrade Paths.

Upgrading to FortiOS 5.6.0

Cooperative Security Fabric Upgrade

FortiOS 5.4.1 and later greatly increases the interoperability between other Fortinet products. This includes:

  • FortiClient 5.4.1 and later l FortiClient EMS 1.0.1 and later l FortiAP 5.4.1 and later l FortiSwitch 3.4.2 and later

The upgrade of the firmware for each product must be completed in a precise order so the network connectivity is maintained without the need of manual steps. Customers must read the following two documents prior to upgrading any product in their network:

  • Cooperative Security Fabric – Upgrade Guide
  • FortiOS 5.4.x Upgrade Guide for Managed FortiSwitch Devices

This document is available in the Customer Support Firmware Images download directory for FortiSwitch 3.4.2.

FortiGate-VM 5.4 for VMware ESXi                                                                                          Upgrade Information

FortiGate-VM 5.4 for VMware ESXi

Upon upgrading to FortiOS 5.4.6, FortiGate-VM v5.4 for VMware ESXi (all models), no longer supports the VMXNET2 vNIC driver.

Downgrading to previous firmware versions

Downgrading to previous firmware versions results in configuration loss on all models. Only the following settings are retained:

l operation mode l interface IP/management IP l static route table l DNS settings l VDOM parameters/settings l admin user account l session helpers l system access profiles

When downgrading from 5.4 to 5.2, users will need to reformat the log disk.

Amazon AWS Enhanced Networking Compatibility Issue

Due to this new enhancement, there is a compatibility issue with older AWS VM versions. After downgrading a 5.4.1 or later image to an older version, network connectivity is lost. Since AWS does not provide console access, you cannot recover the downgraded image.

Downgrading to older versions from 5.4.1 or later running the enhanced nic driver is not allowed. The following AWS instances are affected:

  • C3 l C4 l R3 l I2
  • M4 l D2


Upgrade Information                                                                                                             FortiGate VM firmware

FortiGate VM firmware

Fortinet provides FortiGate VM firmware images for the following virtual environments:

Citrix XenServer and Open Source XenServer

  • .out: Download the 64-bit firmware image to upgrade your existing FortiGate VM installation.
  • Download the 64-bit package for a new FortiGate VM installation. This package contains the QCOW2 file for Open Source XenServer.
  • Download the 64-bit package for a new FortiGate VM installation. This package contains the Citrix XenServer Virtual Appliance (XVA), Virtual Hard Disk (VHD), and OVF files.

Linux KVM

  • .out: Download the 64-bit firmware image to upgrade your existing FortiGate VM installation.
  • Download the 64-bit package for a new FortiGate VM installation. This package contains QCOW2 that can be used by qemu.

Microsoft Hyper-V

  • .out: Download the 64-bit firmware image to upgrade your existing FortiGate VM installation.
  • Download the 64-bit package for a new FortiGate VM installation. This package contains three folders that can be imported by Hyper-V Manager on Hyper-V 2012. It also contains the file vhd in the Virtual Hard Disks folder that can be manually added to the Hyper-V Manager.

VMware ESX and ESXi

  • .out: Download either the 64-bit firmware image to upgrade your existing FortiGate VM installation.
  • Download either the 64-bit package for a new FortiGate VM installation. This package contains Open Virtualization Format (OVF) files for VMware and two Virtual Machine Disk Format (VMDK) files used by the OVF file during deployment.

Firmware image checksums

The MD5 checksums for all Fortinet software and firmware releases are available at the Customer Service & Support portal, After logging in select Download > Firmware Image Checksums, enter the image file name including the extension, and select Get Checksum Code.

Product Integration and Support

FortiOS 5.4.6 support

The following table lists 5.4.6 product integration and support information:

Web Browsers l Microsoft Edge 38 l Mozilla Firefox version 53 l Google Chrome version 58 l Apple Safari version 9.1 (For Mac OS X)

Other web browsers may function correctly, but are not supported by Fortinet.

Explicit Web Proxy Browser l Microsoft Edge 40 l Mozilla Firefox version 53 l Apple Safari version 10 (For Mac OS X) l Google Chrome version 58

Other web browsers may function correctly, but are not supported by Fortinet.

FortiManager For the latest information, see the FortiManagerand FortiOS Compatibility.

You should upgrade your FortiManager prior to upgrading the FortiGate.

FortiAnalyzer For the latest information, see the FortiAnalyzerand FortiOS Compatibility.

You should upgrade your FortiAnalyzer prior to upgrading the FortiGate.

FortiClient Microsoft

Windows and FortiClient

Mac OS X

l 5.4.1 and later

If FortiClient is being managed by a FortiGate, you must upgrade FortiClient before upgrading the FortiGate.

FortiClient iOS l 5.4.1 and later
FortiClient Android and FortiClient VPN Android l 5.4.0 and later

FortiOS 5.4.6

FortiAP l 5.4.1 and later l 5.2.5 and later

Before upgrading FortiAP units, verify that you are running the current recommended FortiAP version. To do this in the GUI, go to the WiFi Controller> Managed Access Points > Managed FortiAP. If your FortiAP is not running the recommended version, the OS Version column displays the message: A recommended update is available.

FortiAP-S l 5.4.1 and later
FortiSwitch OS

(FortiLink support)

l 3.5.0 and later
FortiController l 5.2.0 and later

Supported models: FCTL-5103B, FCTL-5903C, FCTL-5913C l 5.0.3 and later

Supported model: FCTL-5103B

FortiSandbox l 2.1.0 and later l 1.4.0 and later
Fortinet Single Sign-On (FSSO) l  5.0 build 0264 and later (needed for FSSO agent support OU in group filters)

l  Windows Server 2016 Server Edition l Windows Server 2016 Datacenter l Windows Server 2008 (32-bit and 64-bit) l Windows Server 2008 R2 64-bit l Windows Server 2012 Standard l Windows Server 2012 R2 Standard l Novell eDirectory 8.8

l  4.3 build 0164 (contact Support for download) l Windows Server 2003 R2 (32-bit and 64-bit) l Windows Server 2008 (32-bit and 64-bit) l Windows Server 2008 R2 64-bit l Windows Server 2012 Standard Edition l Windows Server 2012 R2 l Novell eDirectory 8.8

FSSO does not currently support IPv6.

FortiExplorer l 2.6.0 and later.

Some FortiGate models may be supported on specific FortiExplorer versions.


FortiOS 5.4.6 support                                                                                             Product Integration and Support

FortiExplorer iOS l 1.0.6 and later

Some FortiGate models may be supported on specific FortiExplorer iOS versions.

FortiExtender l 3.0.0 l 2.0.2 and later
AV Engine l 5.247
IPS Engine l 3.438
Virtualization Environments
Citrix l XenServer version 5.6 Service Pack 2 l XenServer version 6.0 and later
Linux KVM l RHEL 7.1/Ubuntu 12.04 and later l CentOS 6.4 (qemu 0.12.1) and later
Microsoft l Hyper-V Server 2008 R2, 2012, 2012 R2, and 2016
Open Source l XenServer version 3.4.3 l XenServer version 4.1 and later
VMware l  ESX versions 4.0 and 4.1

l  ESXi versions 4.0, 4.1, 5.0, 5.1, 5.5, 6.0, and 6.5

VM Series – SR-IOV The following NIC chipset cards are supported:

l Intel 82599 l Intel X540 l Intel X710/XL710


Language support

The following table lists language support information.

Language support

Language GUI
Chinese (Simplified)
Chinese (Traditional)
Portuguese (Brazil)
Spanish (Spain)

SSL VPN support

SSL VPN standalone client

The following table lists SSL VPN tunnel client standalone installer for the following operating systems.

Operating system and installers

Operating System Installer
Linux CentOS 6.5 / 7 (32-bit & 64-bit)

Linux Ubuntu 16.04

2333. Download from the Fortinet Developer Network

Other operating systems may function correctly, but are not supported by Fortinet.

SSL VPN support                                                                                                  Product Integration and Support

SSL VPN web mode

The following table lists the operating systems and web browsers supported by SSL VPN web mode.

Supported operating systems and web browsers

Operating System Web Browser
Microsoft Windows 7 SP1 (32-bit & 64-bit)

Microsoft Windows 8 / 8.1 (32-bit & 64-bit)

Microsoft Internet Explorer version 11

Mozilla Firefox version 53

Google Chrome version 58

Microsoft Windows 10 (64-bit) Microsoft Edge

Microsoft Internet Explorer version 11

Mozilla Firefox version 53

Google Chrome version 58

Linux CentOS 6.5 / 7 (32-bit & 64-bit) Mozilla Firefox version 53
Mac OS 10.11.1 Apple Safari version 9

Mozilla Firefox version 53

Google Chrome version 58

iOS Apple Safari

Mozilla Firefox

Google Chrome

Android Mozilla Firefox

Google Chrome

Other operating systems and web browsers may function correctly, but are not supported by Fortinet.

SSL VPN host compatibility list

It is recommended to verify the accuracy of the GUID for the software you are using for SSLVPN host check. The following Knowledge Base article at describes how to identify the GUID for antivirus and firewall products: How to add non listed 3rd Party AntiVirus and Firewall product to the FortiGate SSL VPN Host check.

After verifying GUIDs, you can update GUIDs in FortiOS by using this command: config vpn ssl web host-check-software


Following is an example of how to update the GUID for AVG Internet Security 2017 on Windows 7 and Windows 10 by using the FortiOS CLI.

To update GUIDs in FortiOS:

  1. Use the config vpn ssl web host-check-software command to edit the AVG-InternetSecurity-AV variable to set the following GUID for AVG Internet Security 2017:


  1. Edit the AVG-Internet-Security-FW variable to set the following GUID: 757AB44A-78C2-7D1A-E37F-CA42A037B368


Resolved Issues

The following issues have been fixed in version 5.4.6. For inquires about a particular bug, please contact CustomerService & Support.


Bug ID Description
300206 Proxy-AV POP3 44k throughput test constantly has aborted transactions with low stress level.
442328 Replacement message image fails to load.
Bug ID Description
422755 memory_tension_drop increase even though memory usage is very low.

DNS Filter

Bug ID Description
402831 DNS Filter and Interface page botnet DB check should be updated.
420170 Skip the rating for Dynamic DNS update type queries.
422407 dnsproxy process runing high CPU causing degradation of DNS traffic.
438834 DNS Filter blocks access when rating error occurs, even with allow request on rating error enabled.


Bug ID Description
403514 Broadcast packets are not forwarded through VIP.
415035 Policy64 with VIP64 assigns incorrect SNAT IP
421381 IPsec traffic matching NAT64 policy dropped by NP IPSEC0_IQUEUE.
424558 Renaming onetime schedule causes policy activation.
435070 Full Cone NAT not working for WhatsApp Video and Voice Call.



Bug ID Description
392883 SLBC slave blades with TP VDOMs cannot connect to FSSO Collector Agent.

FortiGate and FortiWifi E Series

Bug ID Description
413699 In some FortiGate and FortiWifi E series models, the default Inspection Mode is flow-based instead of proxy-based.

Affected models: FG-60E, FG-61E, FWF-60E, FWF-61E, FG-80E, FG-81E, FG-80E-POE, FG-81E-POE, FG-100E, FG-101E, FG-100EF, FG-140E, FG-140E-POE.


Bug ID Description
435219 cu_acd causing memory leak leading to conserve mode.


Bug ID Description
367394 Colors configured for firewall address objects are not visible in firewall policy list.
368070 Custom category is not referenced when used in a web filter profile.
372907 Reference page shows no matching entries found for VPN tunnel with special characters in tunnel name.
378575 Disabled local rating categories are incorrectly added into new web filter profiles.
392500 In the GUI Interface Bandwidth widget, the speed keep jumping from real value to 0 bps.
397233 GUI improve visibility of hardware acceleration features and memory usage.
406486 Permission denied error is shown when changing AntiVirus configuration even when AntiVirus privilege is set to Read-Write.
408577 Admin and FortiClient profile cannot be displayed when language is Japanese.
409100 Edit admin/user, enable FortiToken mobile, click send activation email before saving would send empty activation code.
411415 Update FortiOS API to remove IPS sessions in parallel with firewall sessions.
Bug ID Description
421263 Multiple wildcard login accounts gives wrong guest account provisioning when Post-login-banner is enabled.
439160 Address object references are not displayed.


Bug ID Description
389861 SNMP query for fgHaStatsSyncStatus on slave unit reports master as unsynchronized- “0”.
392677 The HA widget shows the slave status as not synchronized when the status is synchronized.
412652 Unexpected behavior occurs when one cluster unit has a monitored port down and the other cluster unit has ping server issues.
421639 HA kernel routes are not flushed after failover, when cluster learns a high number of routes.
423144 Reliable syslog using dedicated HA management interface doesn’t work.
437390 HA failover triggered before pingserver-failover-threshold is reached.
438197 PPPoE connection is disrupted by HA failover/failback.
442085 After HA failover, the new master unit uses an OSPF MD5 authentication encryption sequence that is lower than the previous sequence number.
442663 No NTP sync and feature license invalid at backup device in FGSP cluster.


Bug ID Description
422666 New mechanism to load IPS/App rules into CMDB to avoid FortiGate bootup failure or lockup.
434478 Information incorrect in diag test app ipsmonitor 13.
439245 When the firewall policy was applied by FortiManager, a crash log of the IPS engine occurred.
445900 SSL negotiation not completed when IPS and SSL Inspection profiles are present.


Bug ID Description
396953 “Encapsulation GRE” (GRE over IPsec) does not allow self-originated traffic to enter the tunnel.
401847 Half of IPsec tunnels traffic lost 26 minutes after power on a spare 1500D.
416102 Traffic over IPsec VPN getting dropped after 2 pings when it is getting offloaded to NPU.
416950 NP6 stop process traffic through IPsec tunnel.

Logging & Report

Bug ID Description
420147 Getting Errorconnecting to FortiCloud message when trying to access FortiCloud Reports in GUI.
445522 In Local report -Web Usage section, Top users by bandwidth seems to show the download as upload.


Bug ID Description
424381 Random TCP sessions get stuck or time out.


Bug ID Description
410420 Spam emails are exempted if they are sent in one session.
416790 (no.x pattern matched) is not logged when bwl matches envelop MAIL FROM.


Bug ID Description
375137 SSL VPN bookmarks may be accessible after accessing more than ten bookmarks in web mode.
380974 SSL VPN sometimes gets key conflict when loading system provided keys.
401807 SSL VPN web mode for VNC could not launch pop up menu with F8.
Bug ID Description
412456 SSL VPN realm should be kept in the idle timeout redirected URL.
412850 SSL VPN Portal redirect not working. Fails with a Javascript error.
421261 Access to web sites via Webbase SSL VPN returns empty page after browsing for some time.
448852 OTP for RSA Server are truncated if they are longer than eight digits.


Bug ID Description
383624 Sending multicast traffic across NP6 inter-VDOM link may cause interfaces to stop sending/receiving.
392436 Slow throughput using 10G interfaces.
392655 Conserve mode – 4096 SLAB leak suspected.
393006 NPU offloading causes issues with Arista.
397266 Disable unnecessary FGT queries and RSS feeds.
407383 LACP will not negotiate on 100D ports 15 and 16 using FG-TRAN-SX.
408977 802.1AX L4 algorithm and NP4 do not distribute UDP evenly on egress LAG bundle.
415555 IPv6 ipv6-neighbor-cache configuration doesn’t survive after a reboot or flush command.
415910 CPU cores utilization shows 0% while handling CPS.
416678 FG101E/100E has reports of firewall lockups in production.
420150 NTPv3 with authentication enabled fails with error receive: authentication failed.
421714 Merge kxp D state fix into 5.4.6.
423375 Some configurations are missing in the output of show full-configuration.
424213 Cluster Virtual MAC address changed to Physical port MAC address when Ports are assigned on MGMT-VDOM.
434480 Admin user session does not time out.
Bug ID Description
436211 Kernel conserve mode occurs due to memory leak.
437589 Slow throughput on 1000D between 10G and 1G interfaces.
437925 FWF-81CM dnsproxy daemon has high memory usage.
438088 U-Turn traffic in Transparent mode VDOM does not work anymore.
438205 Packets in reply direction get dropped if ingress interface is not the same as egress in original direction.
438405 HRX/PKTCHK Drops over NP6 with 1.5 Gbps.
439115 IP-to-IP-Tunnel does not forward packets after rebooting.
439469 Dropped packets only on the LACP Interface but not on the physicals that is part of the LAG.
439897 Virtual wire pair on asymmetric environment.
440412 Added SNMP trap for per-CPU usage.
440923 The FortiGate interface DHCP client does not work properly in some situations.
441532 Suggest to add SNMP/CLI monitoring capabilities of NP6 session table.


Bug ID Description
404089 Uninterruptible upgrade failed because routes are not yet synced on new master.

User and FSSO

Bug ID Description
378085 User authentication timeout max. setting change.
378207 authd process running high CPU when only RSSO logging is configured.
412487 RSSO Endpoint Storage limits the number of characters to 48.
437204 authd sends malformed NTLM TYPE2 to browser and breaks NTLM authentication.
438758 A CRL update on the FortiGate does not trigger an auto-update to the FortiManager.


Bug ID Description
424452 SNMP traps not being sent when interface is down.
441294 The network bandwidth show a zero value.


Bug ID Description
423437 SIP ALG does not translate all MSRP SEND messages if more than one SEND message is contained within a single packet.

Web Filter

Bug ID Description
409110 Web page override login page loads slowly.
420967 Proxy AV + Proxy WF + SSL Certificate Inspection (Inspect All Ports) results in HTTPS traffic bypassing WiFi.
423020 Regex value changes in the URL filter.
435258 Send Fin/Ack to the client during HTTP POST request.
436354 Replace Message Group Web FilterBlock Override page not working.


Bug ID Description
415385 Explicit FTP proxy issue on zero file size transfers.
416208 WAD Dispatcher reached FD limit with large number of CLOSE_WAIT sockets, some workers entered “D” state.
417001 Explicit HTTP proxy drops HTTPS connections on WiFi rating failures.
417491 WAD crashed when handling FTP over HTTP traffic.
418193 Some HTTPS sites show Secure Connection Failed with flow-based web filter (static URL filter only) and SSL certificate inspection.
423077 WAD crashed after upgrading from 5.2.10 to 5.4.4 GA release.
Bug ID Description
434787 FortiGate deep inspection is causing nonconforming extension certificate error on MAC, Android, and Chromebook devices.
435283 block-page-status-code doesn’t work for HTTP status code of the DLP replacement message.


Bug ID             Description
364688            Packet loss when offloading CAPWAP traffic.
434991            WTP tablesize limitation cause WTP entry to be lost after upgrade from 5.4.4 to 5.4.5.

Affected models: FG-30D, FG-30D-POE, FG-30E, FWF-30D, FWF-30D-POE, FWF-30E.

437949 Split tunnel enhancement: set split-tunneling-acl-path [tunnel | local].

Common Vulnerabilities and Exposures

Bug ID CVE references
405122 FortiOS5.4.6 is no longer vulnerable to the following CVE Reference: l 2017-3732 l 2017-7055

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415416 FortiOS5.4.6 is no longer vulnerable to the following CVE Reference: l 2017-7733

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416322 FortiOS5.4.6 is no longer vulnerable to the following CVE Reference: l 2017-2636

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422133 FortiOS5.4.6 is no longer vulnerable to the following CVE Reference: l 2017-3555

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440744 FortiOS5.4.6 is no longer vulnerable to the following CVE Reference: l 2017-7739

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442365 FortiOS5.4.6 is no longer vulnerable to the following CVE Reference: l 2017-7738

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Bug ID CVE references
446892 FortiOS5.4.6 is no longer vulnerable to the following CVE Reference: l 2017-13077 l 2017-13078 l 2017-13079 l 2017-13080 l 2017-13081 l 2017-13082

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449257 FortiOS5.4.6 is no longer vulnerable to the following CVE Reference: l 2017-14182

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Known Issues

The following issues have been identified in version 5.4.6. For inquires about a particular bug or to report a bug, please contact CustomerService & Support.


Bug ID Description
374969 FortiSandbox FortiView may not correctly parse the FSA v2.21 tracer file(.json).
Bug ID Description
375246 invalid hbdev dmz may be received if the default hbdev is used.

Endpoint Control

Bug ID Description
374855 Third party compliance may not be reported if FortiClient has no AV feature.
375149 FortiGate does not auto update AV signature version while Endpoint Control (fortiheartbeat) is enabled but no AV profile is used.
391537 Buffer size is too small when sending large vulnerability list to FortiGate.


Bug ID Description
364589 LB VIP slow access when cookie persistence is enabled.


Bug ID Description
385860 FortiGate-3815D does not support 1 GE SFP transceivers.




Bug ID Description
304199 Using HA with FortiLink can encounter traffic loss during failover.
357360 DHCP snooping may not work on IPv6.
369099 FortiSwitch authorizes successfully but fails to pass traffic until you reboot FortiSwitch.


Bug ID Description
368644 Physical Topology: Physical Connection of stacked FortiSwitch may be incorrect.
372350 Threat view: Threat Type and Event information is missing in the last level of the threat view.
373142 Threat: Filter result may not be correct when adding a filter on a threat and threat type on the first level.
375187 Using realtime auto update may increase chrome browser memory usage.


Bug ID Description
289297 Threat map may not be fully displayed when screen resolution is not big enough.
297832 Administrator with read-write permission for Firewall Configuration is not able to read or write firewall policies.
355388 The Select window for remote server in remote user group may not work as expected.
365223 In Security Fabric topology, a downstream FortiGate may be shown twice when it uses hardware switch to connect upstream.
365317 Unable to add new AD group in second FSSO local polling agent.
365378 You may not be able to assign ha-mgmt-interface IP address in the same subnet as another port from the GUI.
368069 Cannot select wan-load-balance or members for incoming interface of IPsec tunnel.
369155 There is no Archived Data tab for email attachment in the DLP log detail page.
372908 The interface tooltip keeps loading the VLAN interface when its physical interface is in another VDOM.

Known Issues

Bug ID Description
372943 Explicit proxy policy may show a blank for default authentication method.
373363 Multicast policy interface may list the wan-load-balance interface.
373546 Only 50 security logs may be displayed in the Log Details pane when more than 50 are triggered.
374081 wan-load-balance interface may be shown in the address associated interface list.
374162 GUI may show the modem status as Active in the Monitor page after setting the modem to disable.
374224 The Ominiselect widget and Tooltip keep loading when clicking a newly created object in the Firewall Policy page.
374320 Editing a user from the Policy list page may redirect to an empty user edit page.
374322 Interfaces page may display the wrong MAC Address for the hardware switch.
374363 Selecting Connect to CLI from managed FAP context menu may not connect to FortiAP.
374373 Policy View: Filter bar may display the IPv4 policy name for the IPv6 policy.
374397 Should only list any as destination interface when creating an explicit proxy in the TP VDOM.
374521 Unable to Revert revisions in GUI.
374525 When activating the FortiCloud/Register-FortiGate, clicking OK may not work the first time.
375036 The Archived Data in the SnifferTraffic log may not display detailed content and download.
375227 You may be able to open the dropdown box and add new profiles even though errors occur when editing a Firewall Policy page.
375259 Addrgrp editing page receives a js error if addrgrp contains another group object.
375346 You may not be able to download the application control packet capture from the forward traffic log.
375369 May not be able to change IPsec manualkey config in GUI.
375383 The Policy list page may receive a js error when clicking the search box if the policy includes wan-load-balance interface.
379050 User Definition intermittently not showing assigned token.


Bug ID Description
398397 Slowness in accessing Policy and Address page in GUI after upgrading from 5.2.2 to 5.4.1.
403146 Slow GUI Policy tab when there are more than 600 policies.
453751 In IE11, the Policy and Address page keeps reloading when there are many entries.
454259 The Policy list page does not display tooltips for policy comments.


Bug ID Description
399115 ID for the new policy (when using edit 0) is different on master and on slave unit.


Bug ID Description
393958 Shellshock attack succeeds when FGT is configured with server-cert-mode replace and an attacker uses rsa_3des_sha.
435124 Cannot establish IPsec phase1 tunnel after upgrading from version 5.4.5 to 5.6.0.

Workaround: After upgrading to 5.6.0, reconfigure all IPsec phase1 psksecret settings.

439923 IKE static tunnels using set peertype one may fail to negotiate.


Bug ID Description
299490 During and after failover, some multicast groups take up to 480 seconds to recover.


Bug ID Description
303661 The Start Tunnel feature may have been removed.
304528 SSL VPN Web Mode PKI user might immediately log back in even after logging out.
374644 SSL VPN tunnel mode Fortinet bar may not be displayed.
382223 SMB/CIFS bookmark in SSL VPN portal doesn’t work with DFS Microsoft file server error “Invalid HTTP request”.
404863 In SSL VPN Web Mode, clicking new bookmark gets error Internal: invalid parameter.

Known Issues

Bug ID Description
364280 ssh-dss may not work on FG-VM-LENC.


Bug ID Description
287612 Span function of software switch may not work on FortiGate-51E/FortiGate-30E.
290708 nturbo may not support CAPWAP traffic.
295292 If private-data-encryption is enabled, when restoring config to a FortiGate, the FortiGate may not prompt the user to enter the key.
304199 FortiLink traffic is lost in HA mode.
364280 User cannot use ssh-dss algorithm to log in to FortiGate via SSH.
371320 show system interface may not show the Port list in sequential order.
372717 Option admin-https-banned-cipher in sys global may not work as expected.
392960 FOS support for V4 BIOS.
445383 Traffic cannot go through LACP static mode interface with NP6 offload enabled.


Bug ID Description
289491 When upgrading from 5.2.x to 5.4.0, port-pair configuration may be lost if the port-pair name exceeds 12 characters.


Bug ID Description
374138 FortiGate device with VIP configured may be put under Router/NAT devices because of an address change.




Citrix XenServer limitations

The following limitations apply to Citrix XenServer installations:

  • XenTools installation is not supported.
  • FortiGate-VM can be imported or deployed in only the following three formats:
  • XVA (recommended) l VHD l OVF
  • The XVA format comes pre-configured with default configurations for VM name, virtual CPU, memory, and virtual NIC. Other formats will require manual configuration before the first power on process.

Open Source XenServer limitations

When using Linux Ubuntu version 11.10, XenServer version 4.1.0, and libvir version 0.9.2, importing issues may arise when using the QCOW2 format and existing HDA issues.

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