ASUS RT-AX1800S Firmware version 3.0.0.4.386_69136 New ASUS RT-AX1800S Firmware version 3.0.0.4.386_69136 version 3.0.0.4.386_69136 2025/08/06 This version of firmware is only applicable to RT-AX1800S, please check the model name from the product SN label or...

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New ASUS RT-AX1800S Firmware version 3.0.0.4.386_69136

version 3.0.0.4.386_69136

2025/08/06

 

This version of firmware is only applicable to RT-AX1800S, please check the model name from the product SN label or box label before utilizing.

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.
– AiCloud Authentication Hardening (CWE-287) – Added layered verification.
– 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.

https://www.asus.com/networking-iot-servers/wifi-routers/asus-wifi-routers/rt-ax1800s/helpdesk_bios?model2Name=RT-AX1800S

 

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