ASUS RT-AX55 – Official Thread ASUS RT-AX55 Firmware version 3.0.0.4.386_51948 Version 3.0.0.4.386_51948 2023/08/07 Security: Fixed command injection vulnerabilities Fixed remove ookla-IPQ956X Fixed vulnerability in command injection after authentication Fixed XSS potentially via malformed hostname in...

[UK Sentinel]

ASUS RT-AX55 Firmware version 3.0.0.4.386_51948

Version 3.0.0.4.386_51948

2023/08/07

Security:
Fixed command injection vulnerabilities
Fixed remove ookla-IPQ956X
Fixed vulnerability in command injection after authentication
Fixed XSS potentially via malformed hostname in DHCP request
Fixed Fixed Stored Cross Site Scriptin
Fixed XSS attack via EXT3 USB in foldername
Fixed ping ‘-c’ parameter in administration Network Tools is validated only on client side

Feature:
Fixed AiMesh related bugs.
Fixed minor GUI bugs.

https://www.asus.com/uk/networking-iot-servers/wifi-routers/all-series/rt-ax55/helpdesk_bios/?model2Name=RT-AX55

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Latest ASUS RT-AX55 Firmware version 3.0.0.4.386_52041

Version 3.0.0.4.386_52041

2023/08/31

Bug fixes and function modifications:
Fixed v6plus related issues and added OCN Support.
Fixed AiMesh node under Ethernet backhaul issues.
Fixed GUI bugs while searching for AiMesh Node.

https://www.asus.com/networking-iot-servers/wifi-routers/all-series/rt-ax55/helpdesk_bios/?model2Name=RT-AX55

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[citylightwalrus]

ASUS RT-AX55 Firmware version 3.0.0.4.386_52315
Version 3.0.0.4.386_52315
65.24 MB
2024/10/04

1. Updated DS-Lite functions.
2. Minor GUI bug fixes.

Please unzip the firmware file, and then verify the checksum.
SHA256: 152e380b8765119a58d37f9379681dba1800945b2963ad57c0232fd468e7e2c3

https://www.asus.com/uk/networking-iot-servers/wifi-routers/all-series/rt-ax55/helpdesk_bios?model2Name=RT-AX55

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[citylightwalrus]

ASUS RT-AX55 Firmware version 3.0.0.4.386_52332
Version 3.0.0.4.386_52332
65.8 MB
2024/11/11

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: 439fd532f3ed5596e1de4efc4a420b49ad078898bc478e673cc9c7e3304916f3

https://www.asus.com/uk/networking-iot-servers/wifi-routers/all-series/rt-ax55/helpdesk_bios?model2Name=RT-AX55

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[UK Sentinel]

ASUS RT-AX55 Firmware version 3.0.0.4.386_53119

Version 3.0.0.4.386_53119

2025/04/01

1. Enhanced input parameter handling techniques to improve data processing stability and system security.
2. Enhance system access control mechanisms.

https://www.asus.com/uk/networking-iot-servers/wifi-routers/all-series/rt-ax55/helpdesk_bios?model2Name=RT-AX55

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ASUS RT-AX55 Firmware version 3.0.0.4.386_53244 (needed after the recent AyySSHush compromise hence the factory reset advise)

version 3.0.0.4.386_53244

2025/06/20

 

We recommend updating to this firmware version and performing a factory reset to ensure all the latest security enhancements are properly applied.

-Improved login password policy with a new minimum requirement of 10 characters, strengthening overall access security.
-Reinforced communication protocols between the mobile app and the router firmware to ensure more secure interactions.
-Optimized system stability for more consistent and reliable performance.
-Enhanced validation during parameter transmission to improve configuration integrity.
-Optimized routing stability under specific network conditions.
-Implemented security improvements for Dropbear.

 

https://www.asus.com/uk/networking-iot-servers/wifi-routers/all-series/rt-ax55/helpdesk_bios?model2Name=RT-AX55

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[UK Sentinel]

ASUS RT-AX55 Firmware version 3.0.0.4.386_53266

Version 3.0.0.4.386_53266

2025/07/10

– Improved AiMesh backhaul stability.

 

 

https://www.asus.com/uk/networking-iot-servers/wifi-routers/all-series/rt-ax55/helpdesk_bios?model2Name=RT-AX55

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