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CVE-2021-45540

8.4 · HIGH

Certain NETGEAR devices are affected by command injection by an authenticated user.

Published Dec 26, 2021CWE-77EPSS 0.63%

Overview

CVE-2021-45540 is a high-severity vulnerability. It was published on December 26, 2021 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects R7000 before 1.0.11.126, R7900 before 1.0.4.46, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000 before 1.0.4.74, R8000P before 1.4.2.84, RAX200 before 1.0.3.106, MR60 before 1.0.6.110, RAX45 before 1.0.2.66, RAX80 before 1.0.3.106, MS60 before 1.0.6.110, RAX50 before 1.0.2.66, and RAX75 before 1.0.3.106.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refkb.netgear.com/000064477/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-WiFi-Systems-PSV-2020-0196Refkb.netgear.com/000064477/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-WiFi-Systems-PSV-2020-0196

How CyberStrike helps

Frequently asked questions

What is CVE-2021-45540?

CVE-2021-45540 is a high-severity vulnerability. It was published on December 26, 2021 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2021-45540?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-45540?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-45540?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-45540 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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