https://www.asus.com/us/Networking/RT-AX86U/HelpDesk_BIOS/
ASUS RT-AX86U Firmware version 9.0.0.4.386.41994
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...