CVE-2021-45509 : Exploit Details and Defense Strategies

Certain NETGEAR devices like CBR40, RBK752, RBR750, RBS750, RBK852, RBR850, and RBS850 are affected by an authentication bypass vulnerability.

Understanding CVE-2021-45509

Certain NETGEAR devices are susceptible to an authentication bypass vulnerability, potentially leading to unauthorized access.

What is CVE-2021-45509?

CVE-2021-45509 is an authentication bypass vulnerability affecting various NETGEAR devices, allowing unauthorized users to gain access to sensitive information.

The Impact of CVE-2021-45509

The vulnerability has a CVSS base score of 9.6, indicating a critical severity level. It poses a high risk to confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2021-45509

The following technical aspects provide insight into the CVE-2021-45509 vulnerability.

Vulnerability Description

NETGEAR devices like CBR40, RBK752, RBR750, RBS750, RBK852, RBR850, and RBS850 are vulnerable to authentication bypass.

Affected Systems and Versions

CBR40 before 2.5.0.24
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 attackers to bypass authentication measures, potentially gaining unauthorized access to the affected devices.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2021-45509.

Immediate Steps to Take

Update affected NETGEAR devices to the latest firmware versions that contain security patches.
Monitor network logs for any suspicious activity that may indicate unauthorized access.

Long-Term Security Practices

Implement strong, unique passwords for device authentication.
Regularly update firmware to protect against known vulnerabilities.

Patching and Updates

Apply vendor-released security patches promptly to address the authentication bypass vulnerability in NETGEAR devices.