Vulnerability in ASUS Rt-Ac1750 B1
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.
EPSS: 0.022 (81.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
References
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Product, x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-3128?
- CVE-2021-3128 is a high-severity vulnerability in ASUS Rt-Ac1750 B1, classified under Excessive Iteration. CVSS score: 7.5/10. Published 2021-04-12.
- How severe is CVE-2021-3128?
- High severity. CVSS v3 base score is 7.5 out of 10.