ASUS GS-AX5400 Router Firmware 3.0.0.4.388.23012

Changes:

- Supported WireGuard VPN server and client.
- Supported VPN fusion. It can easily achieve VPN connection to network devices like Smart TV, Game consoles and without installing the VPN client software.
- Supported new devices connection notification.
- Supported connection diagnostic on the ASUS router app.
- Supported Instant Guard 2.0 which helps easily invite family or friends to join the VPN connection.
- Built-in Surfshark in VPN Fusion allows you to surf the internet anonymously and securely from anywhere by encrypting connections. Please refer to https://asus.click/SurfsharkVPN
- iPhone/Android USB auto backup WAN allows you to connect your phone to the router’s USB port and use it as an internet source. Please refer to https://asus.click/AutobackupWAN
- DDNS transfer allows you to transfer your ASUS DDNS hostname from your original router to the new one. Please refer to https://asus.click/ASUSDDNS

Bug fixes and functionality modifications:

- Resolved the issue with login and password changes.
- Resolved the IPSec VPN connection issues.
- Resolved the Instant Guard connection issues.
- Fixed the AiCloud login issue after unplugging and plugging the HDD into the USB port.
- Fixed the issue where Traffic Analyzer sometimes couldn't record data.
- Fixed the time display issue for the preferred upgrade time in the Auto Firmware Upgrade function.
- Fine-tuned the description for port status.
- Enabled DynDNS and No-IP DDNS to use IPv6.
- Fixed AiMesh preferred AP identification in site survey results.
- Updated timezone list for Greenland, Mexico, and Iran.
- Modified the USB application option text in dual WAN.
- Allowed WireGuard Server clients to access the Samba server.
- Fixed memory leak issue.
- Enabled the failback function when using the iOS/Android USB backup WAN.

Security updates:

- Enabled and supported ECDSA certificates for Let's Encrypt.
- Enhanced protection for credentials.
- Enhanced protection for OTA firmware updates.
- Fixed DoS vulnerabilities in firewall configuration pages. Thanks to Jinghe Gao's contribution.
- Fixed DoS vulerabilities in httpd. Thanks to Howard McGreehan.
- Fixed information disclosure vulnerability. Thanks to Junxu (Hillstone Network Security Research Institute) contribution.
- Fixed CVE-2023-28702 and CVE-2023-28703. Thanks to Xingyu Xu(@tmotfl) contribution.
- Fixed null pointer dereference vulnerabilities. Thanks to Chengfeng Ye, Prism Research Group - cse hkust contribution.

Installation Procedure:

- Save the downloadable package.
- Log into the router’s web user interface.
- Navigate to the firmware upgrade section of your wireless unit.
- Select the present firmware and configure your router to install this file.
- Wait as the device carries out this process.
- Reboot the unit if required.

About Router Firmware:

Before you consider downloading this firmware, go to the system information page of the router and make sure that the currently installed version isn't either newer or matching this release.

Due to the large variety of router models and different methods for upgrading the device, it is highly recommended that you read and, above all, understand the installation steps before you apply the new firmware, even if you are a power user.

In theory, these steps shouldn't be much of a hassle for anyone, because manufacturers try to make them as easy as possible, even if they don't always succeed. Basically, you must upload the new firmware to the router through its administration page and allow it to upgrade.

If you install a new version, you can expect increased security levels, different vulnerability issues to be resolved, improved overall performance and transfer speeds, enhanced compatibility with other devices, added support for newly developed technologies, as well as several other changes.

If you're looking for certain safety measures, remember that it would be best if you perform the upload using an Ethernet cable rather than a wireless connection, which can be interrupted easily. Also, make sure you don't power off the router or use its buttons during the installation, if you wish avoid any malfunctions.

If this firmware meets your current needs, get the desired version and apply it to your router unit; if not, check with our website as often as possible so that you don't miss the update that will improve your device.