RT-AC66U

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    BIOS & FIRMWARE

    • Driver & Tools
    • BIOS & FIRMWARE
    Firmware
    ASUS RT-AC66U Firmware version 3.0.0.4.382_52728
    Version 3.0.0.4.382_52728
    30.12 MB
    2024/10/23

    1.Strengthened system code execution processes.
    2.Enhanced AiCloud password protection mechanisms, safeguarding against unauthorized access attempts.
    3.Refined input validation in the web interface, ensuring a more secure web interaction environment.
    4.Improved data export functionality in the admin portal, ensuring accurate and secure handling of client information.
    5.Optimized memory management mechanisms, improving system stability.
    6.Improved system buffer management, ensuring reliable data processing workflows.
    7.Enhanced stack buffer management, promoting greater system stability.

    Please unzip the firmware file, and then verify the checksum.
    SHA256: bd14732261974a9a326e5913002e9f908db7598085b14a2f9ee988e66976203b

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    ASUS RT-AC66U Firmware version 3.0.0.4.382_52719
    Version 3.0.0.4.382_52719
    30.12 MB
    2024/09/23

    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: fd99be60940134fdb63d689f3b4476de5d13d593da12ae49b985394ef09156c6

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    ASUS RT-AC66U Firmware version 9.0.0.4.382.52503 (Beta Version)
    Version 9.0.0.4.382.52503
    Beta Version
    30.01 MB
    2021/02/05

    Security Fixed:
    Fixed CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25687, CVE-2020-25684, CVE-2020-25685, CVE-2020-25686

    Please be noted this is a quick fix beta version for DNSmasq vulnerabilities. Refer to "Method 2: Update Manually" in https://www.asus.com/support/FAQ/1008000 to update this firmware.

    Please unzip the firmware file first then check the MD5 code.
    MD5: 8005a652d488386e5f99367a170885a4

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    ASUS RT-AC66U Firmware version 3.0.0.4.382.52287
    Version 3.0.0.4.382.52287
    29.96 MB
    2020/08/04

    - Fixed CVE-2020-12695 (CallStranger)
    - Fixed Reflected XSS vulnerability.
    - Fixed Directory traversal vulnerability.
    - Fixed CVE-2017-15653.

    Please unzip the firmware file first then check the MD5 code.
    MD5: cf553ed9a9bdba773204d3479d4080b8

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    ASUS RT-AC66U Firmware version 3.0.0.4.382.52272
    Version 3.0.0.4.382.52272
    29.93 MB
    2020/06/23

    - Fixed CVE-2018-20334
    - Fixed CVE-2018-20336
    - Fixed null pointer issue.
    - Fixed DDoS vulnerability.
    - Fixed command injection vulnerability.
    - Fixed buffer overflow vulnerability.
    - Updated OTA function.

    Please unzip the firmware file first then check the MD5 code.
    MD5: d826c8690a555c6b8771d56d9721241f

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    ASUS RT-AC66U Firmware version 3.0.0.4.382.51641
    Version 3.0.0.4.382.51641
    29.34 MB
    2019/11/05

    - Fixed a DDoS vulnerability

    Please unzip the firmware file first then check the MD5 code.
    MD5: 8d503c3d4bf34578acc16ddfeb09cb83

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    ASUS RT-AC66U Firmware version 3.0.0.4.382.51640
    Version 3.0.0.4.382.51640
    29.34 MB
    2019/06/10

    - Fixed firmware update notification bugs.

    - Fixed dual wan user interface bugs.

    Please unzip the firmware file first then check the MD5 code.
    MD5: b86747a92cbeb3e875890cc18aa5a6ac

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    ASUS RT-AC66U Firmware version 3.0.0.4.382.51634
    Version 3.0.0.4.382.51634
    29.35 MB
    2019/05/16

    Security Fix
    - Fixed DDoS vulnerability.
    - Fixed AiCloud vulnerability. Thanks for Matt Cundari's contribution.
    - Fixed command injection vulnerability. Thanks for S1mba Lu's contribution.
    - Fixed buffer overflow vulnerability. Thanks for Javier Aguinaga's contribution.
    - Fixed CVE-2018-20334
    - Fixed CVE-2018-20336
    - Fixed null pointer issue. Thanks for CodeBreaker of STARLabs’ contribution.
    - Fixed AiCloud buffer overflow vulnerability. Thanks for Resecurity International's contribution.

    Please unzip the firmware file first then check the MD5 code.
    MD5: c1448ef95d65b8e08b7a38dde53394c9

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    ASUS RT-AC66U Firmware version 3.0.0.4.382.50470
    Version 3.0.0.4.382.50470
    30.72 MB
    2018/05/21

    - Support multi-language (UTF-8) network name
    (Windows XP and Windows 7 do not support UTF-8 format SSID. These two OS may see gibberish if using multi-language SSID.)
    - Improved system stability.
    - Improved compatibility for IntelⓇ CentrinoⓇ 802.11ac card.
    - Fixed XSS vulnerability. Thanks to Yonghui Han of Fortinet's FortiGuard Labs.
    - Fixed CVE-2018-8877, CVE-2018-8878, CVE-2018-8879
    - Fixed plain text password vulnerability in lighttpd.
    - Modified Quick Internet Setup wizard process.
    - Main SSID and guest network can hide independently.
    - Fixed AiCloud login issue.

    Please unzip the firmware file first then check the MD5 code.
    MD5: 06bce3dbe93c5db13f2d8ecea3b912fc

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    ASUS RT-AC66U Firmware version 3.0.0.4.380.8228
    Version 3.0.0.4.380.8228
    29.94 MB
    2018/03/28

    - Fixed information disclosure vulnerability. Thanks to Haitan Xiang and Fand Wang.
    - Fixed CVE-2018-5721 Stack-base buffer overflow vulnerability
    - Fixed CVE-2018-8826 remote code code execution vulnerability. Thanks to Chris Wood.
    - Fixed CVE-2018-5999 HTTP authorization bypass and CVE-2018-6000. An independent security researcher has reported this vulnerability to Beyond Security’s SecuriTeam Secure Disclosure program
    - Fixed remote code execution vulnerability. Thanks to David Maciejak of Fortinet's FortiGuard Labs

    - Fixed CVE-2017-14491: DNS - 2 byte heap based overflow
    - Fixed CVE-2017-14492: DHCP - heap based overflow
    - Fixed CVE-2017-14493: DHCP - stack based overflow
    - Fixed CVE-2017-14494: DHCP - info leak
    - Fixed CVE-2017-14495: DNS - OOM DoS
    - Fixed CVE-2017-14496: DNS - DoS Integer underflow
    - Fixed CVE-2017-13704: Bug collision
    - Fixed AiCloud 2.0 Reflected XSS Vulnerability. Thanks to Guy Arazi and Niv Levi contribution.

    Thanks to Guy Arazi for following vulnerabilities.
    - AiCloud 2.0 Stored XSS Share link manager.
    - AiCloud 2.0 Reflected XSS - "share a link"
    - Download Master HTTP service DoS vulnerability.
    - Download Master Reflected XSS Main login.

    Please unzip the firmware file first then check the MD5 code.
    MD5: 58e62e7543c0a7c5f7d5f6ce12f7acc3

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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.
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