CVE-2021-45551 Explained : Impact and Mitigation

Certain NETGEAR devices are affected by command injection by an authenticated user. This vulnerability impacts various router models before specific firmware versions.

Understanding CVE-2021-45551

This CVE involves command injection vulnerability affecting multiple NETGEAR router models.

What is CVE-2021-45551?

Command injection vulnerability in NETGEAR routers allows an authenticated user to execute arbitrary commands.
Affected router models include D6200, D7000, R6020, R6080, R6050, JR6150, R6120, R6220, R6230, R6260, R6800, R6700v2, R6900v2, R7450, AC2100, AC2400, AC2600, and WNR2020.

The Impact of CVE-2021-45551

CVSS Base Score: 7.6 (High)
Attack Vector: Adjacent Network
Scope: Unchanged
Confidentiality and Integrity Impact: High
Privileges Required: Low
User Interaction: None
Attack Complexity: Low

Technical Details of CVE-2021-45551

This section provides insights into the vulnerability specifics.

Vulnerability Description

Command injection vulnerability allows authenticated users to run arbitrary commands.

Affected Systems and Versions

Various NETGEAR router models are affected before specific firmware versions.

Exploitation Mechanism

An authenticated user can exploit the vulnerability to execute arbitrary commands.

Mitigation and Prevention

Protecting against and mitigating the impact of CVE-2021-45551.

Immediate Steps to Take

Update the firmware to the latest non-vulnerable version.
Restrict access to the routers to trusted users only.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update router firmware to patch vulnerabilities.
Implement strong password policies and multi-factor authentication.

Patching and Updates

Apply security patches released by NETGEAR promptly to address the command injection vulnerability.