CVE-2021-45635 : What You Need to Know

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR750 before 4.6.3.6, RBK752 before 3.2.17.12, RBR750 before 3.2.17.12, RBS750 before 3.2.17.12, RBK852 before 3.2.17.12, RBR850 before 3.2.17.12, and RBS850 before 3.2.17.12.

Understanding CVE-2021-45635

This CVE involves command injection vulnerability in specific NETGEAR devices.

What is CVE-2021-45635?

Command injection vulnerability in certain NETGEAR devices allows unauthenticated attackers to execute arbitrary commands.

The Impact of CVE-2021-45635

The vulnerability has a base score of 9.6 (Critical) with high impact on confidentiality, integrity, and availability.

Technical Details of CVE-2021-45635

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

CVSS v3.1 Base Score: 9.6 (Critical)
Attack Vector: Adjacent Network
Attack Complexity: Low
Privileges Required: None
Scope: Changed

Affected Systems and Versions

CBR750 before 4.6.3.6
RBK752 before 3.2.17.12
RBR750 before 3.2.17.12
RBS750 before 3.2.17.12
RBK852 before 3.2.17.12
RBR850 before 3.2.17.12
RBS850 before 3.2.17.12

Exploitation Mechanism

The vulnerability allows unauthenticated attackers to perform command injections, potentially leading to unauthorized access.

Mitigation and Prevention

Here are the steps to mitigate and prevent exploitation of CVE-2021-45635.

Immediate Steps to Take

Update the affected devices to the latest firmware versions provided by NETGEAR.
Restrict network access to vulnerable devices.
Monitor network traffic for suspicious activities.

Long-Term Security Practices

Regularly update firmware and security patches.
Implement strong network security measures.
Conduct regular security audits and assessments.

Patching and Updates

Promptly apply security patches released by NETGEAR to address the command injection vulnerability.