CVE-2021-40546 Explained : Impact and Mitigation

This CVE record involves a vulnerability in Tenda AC6 US_AC6V4.0RTL_V02.03.01.26_cn.bin that allows attackers with the administrator password to cause a denial of service through a specific parameter injection.

Understanding CVE-2021-40546

This section will delve into the details of the CVE-2021-40546 vulnerability.

What is CVE-2021-40546?

The CVE-2021-40546 vulnerability in Tenda AC6 US_AC6V4.0RTL_V02.03.01.26_cn.bin permits attackers controlling the administrator password to trigger a denial of service by exploiting a particular parameter.

The Impact of CVE-2021-40546

Understanding the implications of the CVE-2021-40546 vulnerability is crucial for security measures.

Technical Details of CVE-2021-40546

Explore the technical aspects and specifics of the CVE-2021-40546 vulnerability.

Vulnerability Description

The vulnerability in Tenda AC6 US_AC6V4.0RTL_V02.03.01.26_cn.bin allows a denial of service attack through a lengthy input in the wifiPwd_5G parameter.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: Not applicable, all versions are affected.

Exploitation Mechanism

The vulnerability is exploited by injecting a lengthy string into the wifiPwd_5G parameter via /goform/setWifi.

Mitigation and Prevention

Discover the necessary steps to address the CVE-2021-40546 vulnerability.

Immediate Steps to Take

Change the administrator password to prevent unauthorized access.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update firmware to patch known vulnerabilities.
Implement network segmentation to contain potential attacks.

Patching and Updates

Keep the device firmware up to date to ensure any security patches related to CVE-2021-40546 are applied.