RT-AX3000S
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BIOS & FIRMWARE

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  • BIOS & FIRMWARE

Firmware
ASUS RT-AX3000S Firmware Version 3.0.0.4.388_34020
Version 3.0.0.4.388_34020
29.63 MB
2026/09/18
SHA-256 :C9F02B0B56D190386B41BDDC7CDDF28C147E4F9AD0D8A6251699749BADD336DC

Improve system stability.

We recommend upgrading to this version to maintain optimal protection.

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ASUS RT-AX3000S Firmware version 3.0.0.4.388_34017
Version 3.0.0.4.388_34017
29.63 MB
2026/05/19
SHA-256 :7CE950DC92D09B0BA071C6EC0E7B8DB840B19DEC675D11AE73AC4A1B4BBBE8D4

Security Fixes
- Enhanced DNS name handling to address a potential memory issue that could occur in rare cases during name format conversion, improving system security and robustness.
- Improved safeguards for execution modules to reduce the risk of substitution during certain processes.

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ASUS RT-AX3000S Firmware version 3.0.0.4.388_34015
Version 3.0.0.4.388_34015
29.63 MB
2026/03/24
SHA-256 :182D7D773D776E4CC7BF2277DA95FF59CC9AA798A87F569908B7FFDD464D4444

Security Fixes
- Enhanced input validation and protection to reduce the risk of command injection and SQL injection.
- Hardened environment variable handling.
- Hardened protections around specific logging/command composition flows to reduce potential injection risks.
- Patched a command injection risk in a specific network diagnostic function.

We recommend upgrading to this version to maintain best protection.

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ASUS RT-AX3000S Firmware version 3.0.0.4.388_33965
Version 3.0.0.4.388_33965
29.68 MB
2025/10/20
SHA-256 :BE6550A46A95DED8BEE70C74F11506EC602841FF074D0A002DB845AF9EA545AF

- Enhanced system stability.
- Enhanced input validation and refactored legacy string handling routines to ensure robust memory management.
- 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.
- 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.
- 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.

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ASUS RT-AX3000S Firmware version 3.0.0.4.388_33911
Version 3.0.0.4.388_33911
28.13 MB
2025/04/24
SHA-256 :C91C28212C6168802B42FBBC7D49D909A212C91E395E84A70EC6DF99A3595A3C

Fixed the IPTV compatibility issue for Now TV

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ASUS RT-AX3000S Firmware version 3.0.0.4.388_33903
Version 3.0.0.4.388_33903
28.13 MB
2025/03/25
SHA-256 :25BDD155C461EA498D94EC9C6CC6E29C7E7100DB69C567336102A6E1F19C5177

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-AX3000S Firmware version 3.0.0.4.388_33625
Version 3.0.0.4.388_33625
27.34 MB
2025/01/14
SHA-256 :EC821352C00D3797DA05E449C5F07854026C738D98F927D39C530200476DA427

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.

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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.
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  • 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.