RT-BE55
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BIOS & FIRMWARE

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  • BIOS & FIRMWARE

Firmware
ASUS RT-BE55 Firmware version 3.0.0.6.102_39263
Version 3.0.0.6.102_39263
41.5 MB
2026/06/01
SHA-256 :AD9531D54BBB76E66CA7A7B632086A054F240A59CBB51E7F144F87ADC0B21FA0

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-BE55 Firmware version 3.0.0.6.102_39254
Version 3.0.0.6.102_39254
41.35 MB
2026/03/12
SHA-256 :BC53ECA232A8A07A06FCDA8F011269A455A9D35E87CB731E1BC6F0287915BE0C

• Improved WLCEVENTD security by limiting its access to the local system, ensuring safer and more streamlined operations.
• GUI bug fixed.

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ASUS RT-BE55 Firmware version 3.0.0.6.102_39253
Version 3.0.0.6.102_39253
41.36 MB
2026/03/04
SHA-256 :C8217604FBC4D6392E65A0E44097E8CFCD090DDAC703097E9EDC9251CF9BFD30

Security:
Strengthened input sanitization mechanism.
Enhanced system API validation for stronger protection consistency.
Strengthened command handling and system resource access controls.
Improved system logging and security event recording mechanisms.

Feature improvement:
Improved system stability.
Improved AiMesh stability.
Refined accessibility-related UI and interaction details.

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ASUS RT-BE55 Firmware version 3.0.0.6.102_39112
Version 3.0.0.6.102_39112
41.11 MB
2025/10/30
SHA-256 :466C828B5C19F05217FB6D426B9A5EDCAD7E1BE708D161128019CCD4EEA66132

- 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.

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ASUS RT-BE55 Firmware version 3.0.0.6.102_38988
Version 3.0.0.6.102_38988
41.09 MB
2025/08/18
SHA-256 :DA12285CA4B1655BDD66A88C8FBEA617ED6123213DA1672F89854E63018A3D44

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 10 characters with at least 1 letter, 1 digit and 1 special symbol, and no consecutive identical characters; hardens defence 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.

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-BE55 Firmware version 3.0.0.6.102_38603
Version 3.0.0.6.102_38603
41.1 MB
2025/07/01
SHA-256 :FF147024ECEB7F3B4CC361EDACB744B5129613C91D70B96C46CB2B0B2160DAFB

Initial firmware release

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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 specifications. Actual performance may be affected by network and service provider factors, interface type, and other conditions. Connected devices must be 802.11ac-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.