CVE-2021-3128
published 2021-04-12CVE-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…
high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
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.
Affected
54 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| asus | rt-ac1750_b1_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |
| asus | rt-ac1750_b1_firmware | < 9.0.0.4.386.41994 | 9.0.0.4.386.41994 |
| asus | rt-ac1900_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |
| asus | rt-ac1900_firmware | < 9.0.0.4.386.41994 | 9.0.0.4.386.41994 |
| asus | rt-ac1900p_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |
| asus | rt-ac1900p_firmware | < 9.0.0.4.386.41994 | 9.0.0.4.386.41994 |
| asus | rt-ac1900u_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |
| asus | rt-ac1900u_firmware | < 9.0.0.4.386.41994 | 9.0.0.4.386.41994 |
| asus | rt-ac2900_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |
| asus | rt-ac2900_firmware | < 9.0.0.4.386.41994 | 9.0.0.4.386.41994 |
| asus | rt-ac3100_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |
| asus | rt-ac3100_firmware | < 9.0.0.4.386.41994 | 9.0.0.4.386.41994 |
| asus | rt-ac5300_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |
| asus | rt-ac5300_firmware | < 9.0.0.4.386.41994 | 9.0.0.4.386.41994 |
| asus | rt-ac58u_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |
| asus | rt-ac58u_firmware | < 9.0.0.4.386.41994 | 9.0.0.4.386.41994 |
| asus | rt-ac65u_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |
| asus | rt-ac65u_firmware | < 9.0.0.4.386.41994 | 9.0.0.4.386.41994 |
| asus | rt-ac66u_b1_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |
| asus | rt-ac66u_b1_firmware | < 9.0.0.4.386.41994 | 9.0.0.4.386.41994 |
| asus | rt-ac68p_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |
| asus | rt-ac68p_firmware | < 9.0.0.4.386.41994 | 9.0.0.4.386.41994 |
| asus | rt-ac68r_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |
| asus | rt-ac68r_firmware | < 9.0.0.4.386.41994 | 9.0.0.4.386.41994 |
| asus | rt-ac68rw_firmware | < 3.0.0.4.386.42095 | 3.0.0.4.386.42095 |