CVE-2021-45611 Explained : Impact and Mitigation

Certain NETGEAR devices are affected by a critical buffer overflow vulnerability that allows unauthenticated attackers to exploit the system. This impacts multiple router models.

Understanding CVE-2021-45611

This CVE details a critical buffer overflow vulnerability in certain NETGEAR routers.

What is CVE-2021-45611?

The vulnerability allows unauthenticated attackers to trigger a buffer overflow, potentially leading to remote code execution on the affected devices.

The Impact of CVE-2021-45611

The impact of this CVE is severe, with a CVSS base score of 9.6, labeling it as critical. It affects confidentiality, integrity, and availability.

Technical Details of CVE-2021-45611

The technical aspects of this CVE provide insight into the vulnerability and its exploitation.

Vulnerability Description

The vulnerability arises from a buffer overflow in certain NETGEAR router models.

Affected Systems and Versions

DC112A before 1.0.0.52
R6400 before 1.0.1.68
RAX200 before 1.0.3.106
WNDR3400v3 before 1.0.1.38
XR300 before 1.0.3.68
R8500 before 1.0.2.144
RAX75 before 1.0.3.106
R8300 before 1.0.2.144
RAX80 before 1.0.3.106

Exploitation Mechanism

The vulnerability can be exploited by an unauthenticated attacker through a buffer overflow, posing a critical risk to affected systems.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of this critical vulnerability.

Immediate Steps to Take

Apply security patches provided by NETGEAR promptly.
Disable remote management on the affected routers.
Monitor network traffic for signs of exploitation.

Long-Term Security Practices

Regularly update router firmware to patch known vulnerabilities.
Implement strong network security measures.
Conduct periodic security audits of network devices.

Patching and Updates

Update the firmware of affected routers to the latest version.