CVE-2021-20620 : What You Need to Know

This article provides detailed information about CVE-2021-20620, a cross-site scripting vulnerability found in Aterm WF800HP firmware Ver1.0.9 and earlier.

Understanding CVE-2021-20620

CVE-2021-20620 is a vulnerability in Aterm WF800HP firmware Ver1.0.9 and earlier that allows remote attackers to inject arbitrary scripts via unspecified vectors.

What is CVE-2021-20620?

The CVE-2021-20620 vulnerability is classified as a cross-site scripting (XSS) issue in the Aterm WF800HP firmware. This vulnerability enables remote attackers to execute malicious scripts on the affected system.

The Impact of CVE-2021-20620

This vulnerability can be exploited by remote attackers to inject and execute arbitrary scripts on devices running the affected Aterm WF800HP firmware. This could lead to unauthorized access, data theft, and other security risks.

Technical Details of CVE-2021-20620

This section covers specific technical details of the CVE-2021-20620 vulnerability.

Vulnerability Description

The cross-site scripting (XSS) vulnerability in Aterm WF800HP firmware Ver1.0.9 and earlier allows attackers to inject malicious scripts through unspecified vectors, potentially compromising the security of the device.

Affected Systems and Versions

The vulnerability affects Aterm WF800HP devices using firmware versions up to Ver1.0.9.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by injecting crafted scripts through unknown attack vectors, gaining unauthorized access and control over the affected devices.

Mitigation and Prevention

To mitigate the CVE-2021-20620 vulnerability, users and organizations can take the following steps:

Immediate Steps to Take

Update the Aterm WF800HP firmware to the latest version provided by NEC Corporation.
Implement network security measures to prevent unauthorized access to vulnerable devices.

Long-Term Security Practices

Regularly monitor security advisories from NEC Corporation and apply necessary patches promptly.
Conduct security assessments and penetration testing to identify and address potential vulnerabilities.

Patching and Updates

NEC Corporation may release patches or updates to address the CVE-2021-20620 vulnerability. Users should regularly check for available updates and apply them to ensure the security of their devices.