CVE-2021-40405 : What You Need to Know

This CVE-2021-40405 article provides details about a denial of service vulnerability in Reolink RLC-410W v3.0.0.136_20121102.

Understanding CVE-2021-40405

CVE-2021-40405 is a vulnerability in the cgiserver.cgi Upgrade API functionality of Reolink RLC-410W v3.0.0.136_20121102.

What is CVE-2021-40405?

A denial of service vulnerability in Reolink RLC-410W v3.0.0.136_20121102 allows a specially-crafted HTTP request to trigger a reboot, potentially by anyone.

The Impact of CVE-2021-40405

With a CVSS base score of 7.7 (High), this vulnerability can lead to a denial of service through a targeted HTTP request.

Technical Details of CVE-2021-40405

This section covers the technical aspects of the CVE.

Vulnerability Description

The vulnerability exists in the cgiserver.cgi Upgrade API of Reolink RLC-410W v3.0.0.136_20121102, allowing for a reboot via a crafted HTTP request.

Affected Systems and Versions

Affected Product: RLC-410W
Vendor: Reolink
Affected Version: v3.0.0.136_20121102

Exploitation Mechanism

The vulnerability can be exploited by sending a specially-crafted HTTP request to the cgiserver.cgi Upgrade API.

Mitigation and Prevention

Learn how to protect your system from CVE-2021-40405.

Immediate Steps to Take

Apply vendor patches or updates promptly.
Implement network controls to restrict access to vulnerable APIs.

Long-Term Security Practices

Regularly update and patch all software and firmware.
Conduct security assessments and penetration testing to identify vulnerabilities.

Patching and Updates

Stay informed about vendor security advisories and apply recommended patches or updates.