Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.

published 2021-03-23 5y ago modified 2026-06-17 4mo ago also EUVD-2021-15720

cvss: 9.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits: 0; none known

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects RBK852 before 3.2.17.12, RBK853 before 3.2.17.12, RBK854 before 3.2.17.12, RBR850 before 3.2.17.12, and RBS850 before 3.2.17.12.

Patch / fix

fixed in 5

netgear rbk852_firmware 3.2.17.12
netgear rbk853_firmware 3.2.17.12
netgear rbk854_firmware 3.2.17.12
netgear rbr850_firmware 3.2.17.12
netgear rbs850_firmware 3.2.17.12

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Exploit prediction

0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.6	CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:C/UI:N
CNA	3.1	9.6	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD	3.1	9.6	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD	2.0	5.8	AV:A/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-77 Improper Neutralization of Special Elements used in a Command

References

kb.netgear.com /000063020/Security-Advisory-for-Pre-Authentication-Command-Injection-Some-WiFi-Routers-PSV-2020-0470
vendor-advisory

Sources

CVE List CVE-2021-29079
NVD CVE-2021-29079

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