What is CVE-2021-45555?

CVE-2021-45555 is a high-severity vulnerability in NETGEAR R7900p, classified under Command Injection. CVSS score: 8.4/10. Published 2021-12-26.

How severe is CVE-2021-45555?

High severity. CVSS v3 base score is 8.4 out of 10.

RCE in NETGEAR R7900p

CVE-2021-45555

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects R7900P before 1.4.2.84, R7960P before 1.4.2.84, and R8000P before 1.4.2.84.

Vulnerability class: Command Injection (OS Command Injection)

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

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.018 (77.2th percentile), scored 2026-10-05.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-77 — Command Injection

References

kb.netgear.com/000064497/Security-Advisory-for-Post-Authentication-Command-Inje… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-45555?: CVE-2021-45555 is a high-severity vulnerability in NETGEAR R7900p, classified under Command Injection. CVSS score: 8.4/10. Published 2021-12-26.
How severe is CVE-2021-45555?: High severity. CVSS v3 base score is 8.4 out of 10.