What is CVE-2021-38530?

CVE-2021-38530 is a vulnerability that allows an unauthenticated attacker to execute arbitrary commands on certain NETGEAR devices.

Which NETGEAR devices are affected by CVE-2021-38530?

RBK40, RBR40, RBS40, RBK20, RBR20, RBS20, RBK50, RBR50, RBS50, and RBS50y devices with firmware versions before 2.5.1.16 are affected.

What is the severity of CVE-2021-38530?

The severity of CVE-2021-38530 is critical with a CVSS score of 9.8.

How can an unauthenticated attacker exploit CVE-2021-38530?

An unauthenticated attacker can exploit CVE-2021-38530 by injecting malicious commands.

Is there a fix for CVE-2021-38530?

Yes, updating the firmware of the affected NETGEAR devices to version 2.5.1.16 or higher will fix the vulnerability.

Vulnerability/
CVE-2021-38530

critical

CWE

11/8/2021

19/8/2021

CVE-2021-38530: Command Injection

First published: Wed Aug 11 2021(Updated: )

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects RBK40 before 2.5.1.16, RBR40 before 2.5.1.16, RBS40 before 2.5.1.16, RBK20 before 2.5.1.16, RBR20 before 2.5.1.16, RBS20 before 2.5.1.16, RBK50 before 2.5.1.16, RBR50 before 2.5.1.16, RBS50 before 2.5.1.16, and RBS50Y before 2.6.1.40.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Netgear Rbk40 Firmware	<2.5.1.16
Netgear Rbk40
Netgear Rbr40 Firmware	<2.5.1.16
Netgear Rbr40
Netgear Rbs40 Firmware	<2.5.1.16
Netgear Rbs40
Netgear Rbk20 Firmware	<2.5.1.16
Netgear Rbk20
Netgear Rbr20 Firmware	<2.5.1.16
Netgear Rbr20
Netgear Rbs20 Firmware	<2.5.1.16
Netgear Rbs20
Netgear Rbk50 Firmware	<2.5.1.16
Netgear Rbk50
Netgear Rbr50 Firmware	<2.5.1.16
Netgear Rbr50
Netgear Rbs50 Firmware	<2.5.1.16
Netgear Rbs50
Netgear Rbs50y Firmware	<2.6.1.40
Netgear Rbs50y

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Reference Links

https://kb.netgear.com/000063770/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-WiFi-Systems-PSV-2019-0151

Frequently Asked Questions

What is CVE-2021-38530?
CVE-2021-38530 is a vulnerability that allows an unauthenticated attacker to execute arbitrary commands on certain NETGEAR devices.
Which NETGEAR devices are affected by CVE-2021-38530?
RBK40, RBR40, RBS40, RBK20, RBR20, RBS20, RBK50, RBR50, RBS50, and RBS50y devices with firmware versions before 2.5.1.16 are affected.
What is the severity of CVE-2021-38530?
The severity of CVE-2021-38530 is critical with a CVSS score of 9.8.
How can an unauthenticated attacker exploit CVE-2021-38530?
An unauthenticated attacker can exploit CVE-2021-38530 by injecting malicious commands.
Is there a fix for CVE-2021-38530?
Yes, updating the firmware of the affected NETGEAR devices to version 2.5.1.16 or higher will fix the vulnerability.

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