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RT-AC66U

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Firmware
Version 9.0.0.4.382.52503 Beta Version
2021/02/05 30.01 MBytes

ASUS RT-AC66U Firmware version 9.0.0.4.382.52503 (Beta Version)
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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Version 3.0.0.4.382.52287
2020/08/04 29.96 MBytes

ASUS RT-AC66U Firmware version 3.0.0.4.382.52287
- 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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Version 3.0.0.4.382.52272
2020/06/23 29.93 MBytes

ASUS RT-AC66U Firmware version 3.0.0.4.382.52272
- 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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Version 3.0.0.4.382.51641
2019/11/05 29.34 MBytes

ASUS RT-AC66U Firmware version 3.0.0.4.382.51641
- Fixed a DDoS vulnerability

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

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Version 3.0.0.4.382.51640
2019/06/10 29.34 MBytes

ASUS RT-AC66U Firmware version 3.0.0.4.382.51640
- 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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Version 3.0.0.4.382.51634
2019/05/16 29.35 MBytes

ASUS RT-AC66U Firmware version 3.0.0.4.382.51634
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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Version 3.0.0.4.382.50470
2018/05/21 30.72 MBytes

ASUS RT-AC66U Firmware version 3.0.0.4.382.50470
- 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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Version 3.0.0.4.380.8228
2018/03/28 29.94 MBytes

ASUS RT-AC66U Firmware version 3.0.0.4.380.8228
- 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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   your supplier for exact offers. Products may not be available in all markets.
 * Specifications and features vary by model, and all images are illustrative.
   Please refer to specification pages for full details.
 * PCB color and bundled software versions are subject to change without notice.
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   Logo are trademarks or registered trademarks of HDMI Licensing Administrator,
   Inc. in the United States and other countries.

 * * The actual      transfer speed of USB 3.0, 3.1, 3.2, and/or Type-C will
     vary depending on many      factors including the processing speed of the
     host device, file attributes and      other factors related to system
     configuration and your operating environment.
   * Actual data throughput and WiFi coverage will vary from network conditions
     and environmental factors, including the volume of network traffic,
     building material and construction, and network overhead, result in lower
     actual data throughput and wireless coverage.
   * Quoted network speeds and bandwidth based on current IEEE 802.11ac
     specifications. Actual performance may be affected by network and service
     provider factors, interface type, and other conditions. Connected devices
     must be 802.11ac-compatible for best results.

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