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BIOS & FIRMWARE

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Firmware
ASUS RT-AX86U Pro Firmware version 3.0.0.6.102_37544
Version 3.0.0.6.102_37544
59.46 MB
2026/10/22
SHA-256 :90FE41D4E9C172F97205F104A68BC8F0E8A3AFF69D45CB6A356F3174A847CF52

This update includes a required change for the Speedtest service. If Speedtest is supported on your model, you must install this update to continue using it. Please refer to Speedtest Service Announcement for details.
https://www.asus.com/support/faq/1057454/

Supports Surfshark VPN account login for a smoother user experience. (Supported model only)

Fixed an issue that could cause DNS resolution failures and loss of Internet access when DNSSEC is enabled.

Security Fixes
Web management interface: Strengthened data handling for the connected device list and added stricter content checks when importing configuration profiles.
Network speed test service: Added allowlist validation for service command parameters, so that only expected values are accepted.
System protection service: Adjusted address parameter validation and event logging, strengthening access control between local services.
Certificate import process: Adjusted file handling and password passing, with stricter parameter validation.
Third-party account authorization: Narrowed the recipients of authorization data to better protect authorization information.
Web management interface: Adjusted the output handling of feedback content.
Notification service: Added identity verification for local connection sources and tightened the related file permission settings.
Mobile device connection authorization: Added a device matching check to strengthen the access token issuance process.
Device discovery service: Removed a non-essential internal function endpoint to strengthen overall access control.
AiMesh: Adjusted data access protection during the node joining process, improving system stability while connections are being established.
System temporary directory: Adjusted the default permissions applied at creation time to narrow local file access.
Network diagnostic data query: Strengthened value range checks for time interval parameters.
Network diagnostic data query: Added allowlist validation for query fields.
Internal data query: Improved field matching logic and optimized the memory release process under error conditions.
Time synchronization settings: Strengthened parameter validation for the server name.
File upload handling: Fixed an issue where certain input formats could cause the web management service to become unresponsive.
Wireless channel selection tool: Adjusted the handling of command parameters to prevent unintended command execution.
Certificate upload: Added a pre-check of archive contents to prevent files from being written to unintended locations.
System configuration file generation: Strengthened parameter content checks to prevent abnormal configuration values from affecting network service settings.
VPN and account authentication services: Adjusted the handling of connection settings and account data, with stricter parameter validation.

We recommend updating to this version to maintain optimal protection.

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ASUS RT-AX86U PRO Firmware version 3.0.0.6.102_37485
Version 3.0.0.6.102_37485
59.4 MB
2026/09/22
SHA-256 :68767BF088F1D9791ED111CF6536FEA44AC7DD04CD53B1B07AA7AD303D47EB8E

Security Fixes
Strengthened data handling in Networks configuration functions.
Improved data validation in Networks rule list processing.
Fixed a data-handling issue in the DNS query caching component.
Strengthened verification when a software component downloads - external resources, improving connection security.
Adjusted the information response mechanism of the device discovery service, strengthening protection of device information.
Fixed a data-handling issue in a firmware component on a specific model.
Improved data-display handling in a web function to enhance browsing security.
Strengthened input data validation in a device-pairing web function.
Improved data validation in the configuration file upload/sync function.
Improved how the account service restart process is handled.
Removed a non-essential internal function endpoint, strengthening overall access control.
Adjusted the debug file access mechanism, strengthening protection of internal data.
Strengthened data handling in the system logging function.

We recommend upgrading to this version to maintain optimal protection.

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ASUS RT-AX86U PRO Firmware version 3.0.0.6.102_37436
Version 3.0.0.6.102_37436
59.31 MB
2026/05/04
SHA-256 :A4935D7D5B5A4F40D5AFADE1873A38DD84BF5217827E3147A4FBE6207FABFFD3

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-AX86U Pro Firmware version 3.0.0.6.102_37421
Version 3.0.0.6.102_37421
59.15 MB
2026/03/24
SHA-256 :8015E96403467B187FED616ECA85A8E76C94CC476DE38207E2EC1F73CF17476D

Bug Fixes and Enhancements
- Improved WiFi roaming behavior to reduce temporary disconnections in some scenarios.
- Improved roaming compatibility for certain client devices.
- Improved App Remote Connection stability in certain scenarios to prevent unexpected connection drops.
- Improved AiMesh onboarding reliability, addressing cases where the onboarding process could stall and fail to complete.
- Fixed an issue where the guest network client list might not display correctly in certain scenarios.
- Fixed an issue with Web history display.
- Fixed an issue where the app could not remove offline devices.
- Fixed an issue where specific IPv6 configuration flows could cause IPv6 connectivity problems on the main network.
- Fixed an issue where enabling System Diagnostics and staying on a specific page could cause repeated reboots.

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-AX86U Pro Firmware version 3.0.0.6.102_34406
Version 3.0.0.6.102_34406
58.21 MB
2025/10/28
SHA-256 :A96AD6D8E21F44591E7285984F8A25655DE8492C5E435D5803E1574B9CB3C4D7

- 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-AX86U Pro Firmware version 3.0.0.6.102_34349
Version 3.0.0.6.102_34349
58.18 MB
2025/03/17
SHA-256 :D4F725FFB67997CFB443D641A174C67EB6223A66215D6FFDBD92FECF5C77849F

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-AX86U Pro Firmware version3.0.0.6.102_34336
Version 3.0.0.6.102_34336
58.23 MB
2024/11/12

Please unzip the firmware file, and then verify the checksum.
SHA256: 9fa8f6fb0d85757ce67dc860411fb517d6b1aa1b2c5bba032d0acac03a8ace83

Bug Fixes and Enhancements:
- Resolved UI display issue when setting a fixed channel.

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ASUS RT-AX86U Pro Firmware version 3.0.0.6.102_34334
Version 3.0.0.6.102_34334
58.23 MB
2024/11/06

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.

Please unzip the firmware file, and then verify the checksum.
SHA256: 25962af83278b3da6f46782167c5cc3b13bc36eef3cb388b6eade5241b356959

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ASUS RT-AX86U Pro Firmware version 3.0.0.6.102_34319
Version 3.0.0.6.102_34319
58.15 MB
2024/10/16

1. Optimized memory management mechanisms, improving system efficiency and stability.
2. Strengthened input validation and data processing workflows, further protecting your information security.
3. Improved web rendering engine, enhancing browsing experience and security.
4. Enhanced security of system command processing to guard against potential malicious operations.
5. Perfected JavaScript-related security mechanisms, offering a more secure web interaction environment

Please unzip the firmware file, and then verify the checksum.
SHA256: ffc56dbd39394dd4b2e83f7894dc338fd0ac94678a8f8a4babd5ffe4f77cf231

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