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BIOS & FIRMWARE

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Firmware
ASUS RT-AX86S Firmware version 3.0.0.4.388_24447
Version 3.0.0.4.388_24447
71.63 MB
2026/11/09
SHA-256 ：95EF16E9A414E1B67CA86386228C19B43CC1334DD481C415940F2DB7D5C68832

GUI bug fixes.

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ASUS RT-AX86S Firmware version 3.0.0.4.388_24436
Version 3.0.0.4.388_24436
71.55 MB
2026/04/17
SHA-256 ：5FE86BC3816B4AC140B070DE2293579D315E6360D986987842885DBE89824525

Security Enhancements:
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.

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ASUS RT-AX86S Firmware version 3.0.0.4.388_24323
Version 3.0.0.4.388_24323
71.65 MB
2024/11/28

Please unzip the firmware file, and then verify the checksum.
SHA256: 0cef39649a777d13c8f236d5df206a11d8b1951ba44fdaa988bafa1bf198df1e

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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ASUS RT-AX86S Firmware version 3.0.0.4.386.46061
Version 3.0.0.4.386.46061
75.31 MB
2022/01/11

Security
- Fixed string format stacks vulnerability
- Fixed cross-site-scripting vulnerability
- Fixed informational vulnerability.
Thanks to Howard McGreehan.

-Fixed SQL injection vulnerability
-Fixed json file traversal vulnerability
-Fixed plc/port file traversal vulnerability
-Fixed stack overflow vulnerability
Thanks to HP of Cyber Kunlun Lab

-Fixed authenticated stored XSS vulnerability
Thanks to Luke Walker – SmartDCC

-Fixed LPD denial of service vulnerability
-Fixed cfgserver heap overflow vulnerability
-Fixed cfgserver denial of service vulnerability
Thanks to TianHe from BeFun Cyber Security Lab.

Added more ISP profile
Digi 1 - TM
Digi 2 - TIME
Digi 3 - Digi
Digi 4 - CTS
Digi 5 - ALLO
Digi 6 - SACOFA
Maxis - CTS
Maxis - SACOFA
Maxis - TNB/ALLO

Fixed AiMesh guest network issues.
Fixed DDNS issues where the WAN IP is IPv6
Fixed UI bugs in Administration --> feedback.
Fixed time zone error.
Improved the connection stability.
Supported v6plus

Please unzip the firmware file first then check the MD5 code.
MD5:9c8a9dcf6c72f84bdb5d7584b7113c44

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ASUS RT-AX86S Firmware version 3.0.0.4.386.45934
Version 3.0.0.4.386.45934
75.29 MB
2021/11/11

1. Fixed Let's encrypt related bugs.
2. Fixed httpd vulnerability
3. Fixed stack overflow vulnerability
4. Fixed DoS vulnerability
Thanks for the contribution of Fans0n、le3d1ng、Mwen、daliy yang from 360 Future Security Labs

Please unzip the firmware file first then check the MD5 code.
MD5:8ac42fe109a287d63b17645c80b2506e

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