RT-AX53U
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    BIOS & FIRMWARE

    • Driver & Tools
    • BIOS & FIRMWARE

    Firmware
    ASUS RT-AX53U Firmware version 3.0.0.4.386_69155
    Version 3.0.0.4.386_69155
    41.56 MB
    2025/10/31
    SHA-256 ：975A889FC17F2239F4FCF57EFB5C51F4A37A5A3B016CBBF665B267368D3BEB8F

    - Enhanced system stability.
    - Enhanced input validation and refactored legacy string handling routines to ensure robust memory management.
    - Mitigated security risks in AiCloud service by enforcing strict credential verification, implementing robust file path validation, and hardening command execution logic to prevent unauthorized access and manipulation of system resources.
    - Implemented comprehensive validation and expanded command filtering in the web history API.
    - Strengthened input validation and directory handling in the VPN configuration upload interface.
    - Fixed an issue that allowed certain user settings to be bypassed, improving overall user control and protection.

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    ASUS RT-AX53U Firmware version 3.0.0.4.386_69142
    Version 3.0.0.4.386_69142
    41.42 MB
    2025/09/16
    SHA-256 ：B374EFC6248527F7F268F32CDC01A9F5D0C7090A148678E31B60AED73C500CE4

    Important: After installing this firmware, we strongly recommend performing a factory-default reset to activate every new security adjustment.

    Security Enhancements
    - Password Policy Upgrade – Minimum of 10 characters, including at least one letter, one digit, and one special character; disallows consecutive identical characters; hardens defense against brute-force attacks.
    - HTTPS on 8443 – Management interface now served over TLS by default.
    - UPnP Disabled – Universal Plug and Play starts in the off state for reduced surface exposure.
    - AiCloud Authentication Hardening (CWE-287) – Added layered verification.
    - Authentication Logic Refactor – Removed redundant code paths for a lean sign-in flow.
    - Memory Safety Guard (CWE-476) – Introduced null-reference protections across critical services.
    - Enhanced IPsec Parameter Validation – The existing input checks have been hardened.
    - Data Exposure Mitigation (CWE-200) – Reinforced controls on sensitive pathways.
    - Detailed Audit Trails – Expanded logging within the authentication module.

    System Improvements
    - Connection Stability – Core algorithms refined for steadier links.
    - Scheduling Accuracy – Timed tasks execute reliably under PPPoE, PPTP and L2TP WAN modes.
    - Client List Maintenance – Resolved an issue that prevented offline devices from being removed from the client list

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    ASUS RT-AX53U Firmware version 3.0.0.4.386_69104
    Version 3.0.0.4.386_69104
    41.46 MB
    2025/05/02
    SHA-256 ：C056789F5F6A6E92B0D718F4084A140397B8EBB59135EACEDE6EEB9488C2C3F3

    1. Fixed the UI issue in Chrome.
    2. Fixed client binding issues in Mesh scenarios.
    3. Enhanced input parameter handling techniques to improve data processing stability and system security.
    4. Enhance system access control mechanisms.

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    ASUS RT-AX53U Firmware version 3.0.0.4.386_69086
    Version 3.0.0.4.386_69086
    41.17 MB
    2024/11/05

    1. Strengthened input validation and data processing workflows to further protect information security.
    2. Enhanced AiCloud password protection mechanisms, safeguarding against unauthorized access attempts.
    3. Enhanced device security through improved buffer handling in connection features.
    4. Refined data handling processes, ensuring secure and accurate information management.
    5. Enhanced file access control mechanisms, promoting a more secure operating environment.
    6. Strengthened certificate protection, providing enhanced data security.
    7. Fixed GUI bugs

    Please unzip the firmware file, and then verify the checksum.
    SHA256: e8c1acc2968961290205f37d4aec80a7d0154faa081c19ba3673a0d1392a3d63

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    ASUS RT-AX53U Firmware version 3.0.0.4.386_69061
    Version 3.0.0.4.386_69061
    41.15 MB
    2023/09/15

    Fixed v6plus related issues and added support for OCN.

    Please unzip the firmware file, and then verify the checksum.
    SHA256: 61eeb0c6f3db93ab906b18f675cb3400a1a34ae13522604a364807db764f4b50

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    ASUS RT-AX53U Firmware version 3.0.0.4.386_69021
    Version 3.0.0.4.386_69021
    41.14 MB
    2023/08/21

    New features:
    -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://www.asus.com/support/FAQ/1050074/

    -DDNS transfer allows you to transfer your ASUS DDNS hostname from your original router to the new one. Please refer to https://www.asus.com/support/FAQ/1048684/

    Security updates:
    -Allowed binding DDNS to a user's account to reduce the risk of MITM attacks
    -Fixed the cfg server vulnerability.
    -Fixed lighttpd vulnerability, CVE-2023-35720.
    -Fixed several curl vulnerabilities including CVE-2023-28322, CVE-2023-28321, and CVE-2023-28319.
    -Fixed OpenSSL vulnerability, CVE-2023-0464.
    -Patched several command injection vulnerabilities.
    -Upgraded sqlighte and resolved CVE-2020-11656 / CVE-2019-19646 / CVE-2019-8457 / CVE-2020-11655 / CVE-2018-20505 / CVE-2019-16168 / CVE-2019-19645 / CVE-2020-13435 / CVE-2020-13631 / CVE-2020-13434

    Please unzip the firmware file, and then verify the checksum.
    SHA256: f88339e2ea8b9ebed6fe548818ef052a6e81c41576c3e4f89eb03deafde6e41f

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    ASUS RT-AX53U Firmware version 3.0.0.4.386_69020
    Version 3.0.0.4.386_69020
    41.14 MB
    2023/08/03

    New features:
    -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://www.asus.com/support/FAQ/1050074/

    -DDNS transfer allows you to transfer your ASUS DDNS hostname from your original router to the new one. Please refer to https://www.asus.com/support/FAQ/1048684/

    Security updates:
    -Allowed binding DDNS to a user's account to reduce the risk of MITM attacks
    -Fixed login password issue in specific SKU.
    -Fixed the cfg server vulnerability.
    -Fixed lighttpd vulnerability, CVE-2023-35720.
    -Fixed several curl vulnerabilities including CVE-2023-28322, CVE-2023-28321, and CVE-2023-28319.
    -Fixed OpenSSL vulnerability, CVE-2023-0464.
    -Patched several command injection vulnerabilities.
    -Upgraded sqlighte and resolved CVE-2020-11656 / CVE-2019-19646 / CVE-2019-8457 / CVE-2020-11655 / CVE-2018-20505 / CVE-2019-16168 / CVE-2019-19645 / CVE-2020-13435 / CVE-2020-13631 / CVE-2020-13434

    Please unzip the firmware file, and then verify the checksum.
    SHA256: 59c37dfa563a407808e0597460cd3ea2d07606ce8e640f89bb2f15a84a2e2b55

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    ASUS RT-AX53U Firmware version 3.0.0.4.386_69019
    Version 3.0.0.4.386_69019
    41.14 MB
    2023/07/21

    New features:
    -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://www.asus.com/support/FAQ/1050074/

    -DDNS transfer allows you to transfer your ASUS DDNS hostname from your original router to the new one. Please refer to https://www.asus.com/support/FAQ/1048684/

    Security updates:
    -Allowed binding DDNS to a user's account to reduce the risk of MITM attacks
    -Fixed the cfg server vulnerability.
    -Fixed lighttpd vulnerability, CVE-2023-35720.
    -Fixed several curl vulnerabilities including CVE-2023-28322, CVE-2023-28321, and CVE-2023-28319.
    -Fixed OpenSSL vulnerability, CVE-2023-0464.
    -Patched several command injection vulnerabilities.
    -Upgraded sqlighte and resolved CVE-2020-11656 / CVE-2019-19646 / CVE-2019-8457 / CVE-2020-11655 / CVE-2018-20505 / CVE-2019-16168 / CVE-2019-19645 / CVE-2020-13435 / CVE-2020-13631 / CVE-2020-13434

    Please unzip the firmware file, and then verify the checksum.
    SHA256: 3af4f36f2c22791783bd14d6b7df9614a49bca45de90b8a06d0b497deece9114

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    ASUS RT-AX53U Firmware version 3.0.0.4.386.68691
    Version 3.0.0.4.386.68691
    38.85 MB
    2023/03/30

    1. Fixed an issue with changing passwords.
    2. Fixed bandwidth errors when 5GHz channel is fixed at 116.
    3. Improved security by upgrading to SHA256.
    4. Added support for disabling 11b on 2.4GHz band
    5. Improved DDNS functionality and added HE.NET
    6. Improved smart connect function.
    7. Added LED on/off feature as Aimesh node.
    8. Optimized AiMesh Topology page.
    9. Improved Aimesh stability.

    Please unzip the firmware file first then check the MD5 code.
    MD5: fd9e6ce2178a96ec7d145c4f98464971

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    ASUS RT-AX53U Firmware version 3.0.0.4.386.68526
    Version 3.0.0.4.386.68526
    38.33 MB
    2023/02/07

    1.Improved JP SKU initial setup process.
    2.Improved system stability.
    3.Fixed multi-language related GUI bugs.
    4.Improved AiMesh stability.
    5.Fixed IPSec VPN related performance issue.

    Please unzip the firmware file first then check the MD5 code.
    MD5: e4866c7207666642af3fec8642f01152

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    ASUS RT-AX53U Firmware version 3.0.0.4.386.68383
    Version 3.0.0.4.386.68383
    38.31 MB
    2022/12/22

    1.Improved system stability.
    2.Fixed firmware upgrade issue in the latest step of the initial setup process.
    3.Fixed web user interface display bugs after disabling wireless.

    Please unzip the firmware file first then check the MD5 code.
    MD5: 705d5cd3fc0999749c4ec163879a763f

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    ASUS RT-AX53U Firmware version 3.0.0.4.386.68129
    Version 3.0.0.4.386.68129
    38.27 MB
    2022/10/21

    1. Fixed httpd error when turning off the radio.
    2. Fixed connection issue when SSID containing space and UTF8 under AiMesh or Repeater mode.
    3. Fixed IPv6 manual DNS setting bugs.
    4. Fixed UI display error of USB types.
    5. Fixed AiMesh related issue.
    6. Added new entrance for web GUI http://www.asusrouter.com

    Please unzip the firmware file first then check the MD5 code.
    MD5: 7a480d8fa637f6412fd72ed5bf16f399

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    ASUS RT-AX53U Firmware version 3.0.0.4.386.67508
    Version 3.0.0.4.386.67508
    37.77 MB
    2022/05/30

    1. Supported AiMesh function.
    2. Fixed IPTV bugs.
    3. Fixed WPA2 PSK/WPA3 PSK mix mode issues.
    4. Improved system stability.

    Please unzip the firmware file first then check the MD5 code.
    MD5: 4d2a87085ebb87aa79094795b5b667b2

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    • Products certified by the Federal Communications Commission and Industry Canada will be distributed in the United States and Canada. Please visit the ASUS USA and ASUS Canada websites for information about locally available products.
    • All specifications are subject to change without notice. Please check with your supplier for exact offers. Products may not be available in all markets.
    • Specifications and features vary by model, and all images are illustrative. Please refer to specification pages for full details.
    • PCB color and bundled software versions are subject to change without notice.
    • Brand and product names mentioned are trademarks of their respective companies.
    • The terms HDMI and HDMI High-Definition Multimedia Interface, HDMI trade dress and the HDMI Logos are trademarks or registered trademarks of HDMI Licensing Administrator, Inc. in the United States and other countries.
      • The actual transfer speed of USB 3.0, 3.1, 3.2, and/or Type-C will vary depending on many factors including the processing speed of the host device, file attributes and other factors related to system configuration and your operating environment.
      • Actual data throughput and WiFi coverage will vary from network conditions and environmental factors, including the volume of network traffic, building material and construction, and network overhead, result in lower actual data throughput and wireless coverage.
      • Quoted network speeds and bandwidth based on current IEEE 802.11ac/802.11ax specifications. Actual performance may be affected by network and service provider factors, interface type, and other conditions. Connected devices must be 802.11ac/802.11ax compatible for best results.
      • WPA/WPA2 enterprise is only available on single router, is not available under AiMesh mode.
      • When traditional QoS is enabled, there will be limitations due to the actual Internet service bandwidth and different environment, and there may be a risk of speed reduction.
      • Due to the different power supply requirements on USB external hard disk and 4G/5G Modem device, to ensure that the external device can be used stably, if the USB external device exceeds the standard USB 2.0 (5V/500mA) and USB 3.1 Gen 1 (5V/900mA) power supply requirements, you need to use it with an independent external power supply.
      • If you use the product in conjunction with a third party service, you are responsible for complying with the third party provider's terms and conditions and privacy policy and are also at the risk of such use. ASUS does not provide support or guarantee continuous integration support for products that are not part of ASUS.
      • For models with Time machine support, starting with macOS 26 (Tahoe), Time Machine no longer supports creating new backups on USB-connected storage devices. Existing Time Machine drives that were previously configured remain compatible and can continue to be used for backup and restoration.