CVE-2021-3128

In ASUS RT-AX3000, ZenWiFi AX (XT8), RT-AX88U, and other ASUS routers with firmware < 3.0.0.4.386.42095 or < 9.0.0.4.386.41994, when IPv6 is used, a routing loop can occur that generates excessive network traffic between an affected device and its upstream ISP's router. This occurs when a link prefix route points to a point-to-point link, a destination IPv6 address belongs to the prefix and is not a local IPv6 address, and a router advertisement is received with at least one global unique IPv6 prefix for which the on-link flag is set.

• asus zenwifi ax \(xt8\) firmware (< 3.0.0.4.386.42095) • asus zenwifi ax \(xt8\) firmware (< 9.0.0.4.386.41994) • asus rt-ax3000 firmware (< 3.0.0.4.386.42095) • asus rt-ax3000 firmware (< 9.0.0.4.386.41994) • asus rt-ax55 firmware (< 3.0.0.4.386.42095) • asus rt-ax55 firmware (< 9.0.0.4.386.41994) • asus rt-ax56u firmware (< 3.0.0.4.386.42095) • asus rt-ax56u firmware (< 9.0.0.4.386.41994) • asus rt-ax58u firmware (< 3.0.0.4.386.42095) • asus rt-ax58u firmware (< 9.0.0.4.386.41994) • asus rt-ax68u firmware (< 3.0.0.4.386.42095) • asus rt-ax68u firmware (< 9.0.0.4.386.41994) • asus rt-ax82u firmware (< 3.0.0.4.386.42095) • asus rt-ax82u firmware (< 9.0.0.4.386.41994) • asus rt-ax86u firmware (< 3.0.0.4.386.42095) • asus rt-ax86u firmware (< 9.0.0.4.386.41994) • asus rt-ax88u firmware (< 3.0.0.4.386.42095) • asus rt-ax88u firmware (< 9.0.0.4.386.41994) • asus rt-ac66u b1 firmware (< 3.0.0.4.386.42095) • asus rt-ac66u b1 firmware (< 9.0.0.4.386.41994) • asus rt-ac1750 b1 firmware (< 3.0.0.4.386.42095) • asus rt-ac1750 b1 firmware (< 9.0.0.4.386.41994) • asus rt-ac1900 firmware (< 3.0.0.4.386.42095) • asus rt-ac1900 firmware (< 9.0.0.4.386.41994) • asus rt-ac1900p firmware (< 3.0.0.4.386.42095) • asus rt-ac1900p firmware (< 9.0.0.4.386.41994) • asus rt-ac1900u firmware (< 3.0.0.4.386.42095) • asus rt-ac1900u firmware (< 9.0.0.4.386.41994) • asus rt-ac2900 firmware (< 3.0.0.4.386.42095) • asus rt-ac2900 firmware (< 9.0.0.4.386.41994) • asus rt-ac3100 firmware (< 3.0.0.4.386.42095) • asus rt-ac3100 firmware (< 9.0.0.4.386.41994) • asus rt-ac5300 firmware (< 3.0.0.4.386.42095) • asus rt-ac5300 firmware (< 9.0.0.4.386.41994) • asus rt-ac58u firmware (< 3.0.0.4.386.42095) • asus rt-ac58u firmware (< 9.0.0.4.386.41994) • asus rt-ac65u firmware (< 3.0.0.4.386.42095) • asus rt-ac65u firmware (< 9.0.0.4.386.41994) • asus rt-ac68p firmware (< 3.0.0.4.386.42095) • asus rt-ac68p firmware (< 9.0.0.4.386.41994) • asus rt-ac68r firmware (< 3.0.0.4.386.42095) • asus rt-ac68r firmware (< 9.0.0.4.386.41994) • asus rt-ac68rw firmware (< 3.0.0.4.386.42095) • asus rt-ac68rw firmware (< 9.0.0.4.386.41994) • asus rt-ac68u firmware (< 3.0.0.4.386.42095) • asus rt-ac68u firmware (< 9.0.0.4.386.41994) • asus rt-ac68w firmware (< 3.0.0.4.386.42095) • asus rt-ac68w firmware (< 9.0.0.4.386.41994) • asus rt-ac85u firmware (< 3.0.0.4.386.42095) • asus rt-ac85u firmware (< 9.0.0.4.386.41994) • asus rt-ac86u firmware (< 3.0.0.4.386.42095) • asus rt-ac86u firmware (< 9.0.0.4.386.41994) • asus rt-ac88u firmware (< 3.0.0.4.386.42095) • asus rt-ac88u firmware (< 9.0.0.4.386.41994)