CVE-2021-45511 Explained : Impact and Mitigation

Certain NETGEAR devices are affected by an authentication bypass vulnerability, impacting various router models. This CVE has a CVSS base score of 6.8, indicating a medium severity issue with high impact on availability, confidentiality, and integrity.

Understanding CVE-2021-45511

This CVE identifies a critical authentication bypass vulnerability affecting multiple NETGEAR router models.

What is CVE-2021-45511?

The CVE-2021-45511 vulnerability involves authentication bypass on NETGEAR devices, potentially allowing unauthorized access to sensitive information and control over affected routers.

The Impact of CVE-2021-45511

The vulnerability poses medium-severity risks with a high impact on confidentiality, integrity, and availability of the affected devices.

Technical Details of CVE-2021-45511

This section delves into the technical aspects of the CVE.

Vulnerability Description

The authentication bypass vulnerability in certain NETGEAR devices allows attackers to circumvent authentication mechanisms, leading to unauthorized access to the routers.

Affected Systems and Versions

NETGEAR router models including AC2100, AC2400, D7000, R6220, R6230, R6260, R6330, R6350, R6700v2, R6800, R6850, R6900v2, R7200, R7350, R7400, and R7450 are affected before a specific date in 2021.

Exploitation Mechanism

Attackers with high privileges can exploit this vulnerability via an adjacent network with no user interaction required, impacting the systems' confidentiality, integrity, and availability.

Mitigation and Prevention

Protecting systems from CVE-2021-45511 is crucial to prevent unauthorized access and potential security breaches.

Immediate Steps to Take

Update the affected router models to the latest firmware version provided by NETGEAR.
Consider restricting network access to the routers and implementing strong, unique passwords.

Long-Term Security Practices

Regularly monitor for security updates and patches released by NETGEAR.
Conduct security audits and penetration testing to detect and address any vulnerabilities proactively.

Patching and Updates

Ensure timely application of firmware updates and security patches provided by NETGEAR to mitigate the authentication bypass vulnerability and enhance the overall security posture of the devices.