What is CVE-2021-45643?

CVE-2021-45643 is a high-severity vulnerability in NETGEAR R6400v2. CVSS score: 8.2/10. Published 2021-12-26.

How severe is CVE-2021-45643?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in NETGEAR R6400v2

CVE-2021-45643

Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects R6400v2 before 1.0.4.118, R6700v3 before 1.0.4.118, and XR1000 before 1.0.0.58.

Published 2021-12-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (39.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

References

kb.netgear.com/000064159/Security-Advisory-for-Security-Misconfiguration-on-Som… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-45643?: CVE-2021-45643 is a high-severity vulnerability in NETGEAR R6400v2. CVSS score: 8.2/10. Published 2021-12-26.
How severe is CVE-2021-45643?: High severity. CVSS v3 base score is 8.2 out of 10.