CVE-2021-3128 describes a routing loop vulnerability affecting several ASUS router models, including RT-AX3000, ZenWiFi AX (XT8), and RT-AX88U, running specific firmware versions. This flaw, triggered when IPv6 is active under particular network conditions, can lead to excessive network traffic between the router and the ISP, causing a denial of service. With a CVSS score of 7.5 (High), this vulnerability requires no user interaction or authentication, making it easily exploitable over the network. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.0.0.4.386.42095CPE matchmatch criteria | cpe:2.3:o:asus:zenwifi_ax_\(xt8\)_firmware:*:*:*:*:*:*:*:* | ||
< 9.0.0.4.386.41994CPE matchmatch criteria | cpe:2.3:o:asus:zenwifi_ax_\(xt8\)_firmware:*:*:*:*:*:*:*:* | ||
< 3.0.0.4.386.42095CPE matchmatch criteria | cpe:2.3:o:asus:rt-ax3000_firmware:*:*:*:*:*:*:*:* | ||
< 9.0.0.4.386.41994CPE matchmatch criteria | cpe:2.3:o:asus:rt-ax3000_firmware:*:*:*:*:*:*:*:* | ||
< 3.0.0.4.386.42095CPE matchmatch criteria | cpe:2.3:o:asus:rt-ax55_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.