What is CVE-2021-45553?

CVE-2021-45553 is a high-severity vulnerability in NETGEAR R6900p, classified under Command Injection. CVSS score: 8.7/10. Published 2021-12-26.

How severe is CVE-2021-45553?

High severity. CVSS v3 base score is 8.7 out of 10.

RCE in NETGEAR R6900p

CVE-2021-45553

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects R7000 before 1.0.11.126, R6900P before 1.3.2.126, and R7000P before 1.3.2.126.

Vulnerability class: Command Injection (OS Command Injection)

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

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L.

EPSS exploit prediction

EPSS: 0.010 (60.6th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-77 — Command Injection

References

kb.netgear.com/000064074/Security-Advisory-for-Post-Authentication-Command-Inje… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-45553?: CVE-2021-45553 is a high-severity vulnerability in NETGEAR R6900p, classified under Command Injection. CVSS score: 8.7/10. Published 2021-12-26.
How severe is CVE-2021-45553?: High severity. CVSS v3 base score is 8.7 out of 10.