In ASUS RT-AX3000, ZenWiFi AX (XT8), RT-AX88U, and other ASUS...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-3128
Credits & Attribution
No credits recorded in the NVD database.
References
- https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX3000/HelpDesk_BIOS/
- https://www.asus.com/Networking-IoT-Servers/Whole-Home-Mesh-WiFi-System/ZenWiFi-WiFi-Systems/ASUS-ZenWiFi-AX-XT8-/HelpDesk_BIOS/
- https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX88U/HelpDesk_BIOS/
- https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX86U/HelpDesk_BIOS/
- https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX82U/HelpDesk_BIOS/
- https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX68U/HelpDesk_BIOS/
- https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX58U/HelpDesk_BIOS/
- https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX56U/HelpDesk_BIOS/
- https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX55/HelpDesk_BIOS/
- https://www.asus.com/supportonly/RT-AC5300/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC88U/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC3100/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC86U/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC2900/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC1750_B1/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC1900/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC1900P/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC1900U/HelpDesk_download/
- https://www.asus.com/Networking-IoT-Servers/WiFi-Routers/ASUS-WiFi-Routers/RT-AC66U-B1/HelpDesk_Download/
- https://www.asus.com/supportonly/RT-AC68P/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC68R/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC68RW/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC68U/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC58U/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC85U/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC65U/HelpDesk_download/
- https://www.asus.com/supportonly/RT-AC68W/HelpDesk_download/
More from asus
View All →Affected Vendor
asus
View all reports →Affected Software
Timeline
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.