CVE-2021-44625 : What You Need to Know

A Buffer Overflow vulnerability exists in TP-LINK WR-886N 20190826 2.3.8 in /cloud_config/cloud_device/info interface, which allows a malicious user to execute arbitrary code on the system via a crafted post request.

Understanding CVE-2021-44625

What is CVE-2021-44625?

This CVE identifies a Buffer Overflow vulnerability present in the TP-LINK WR-886N router, specifically in the /cloud_config/cloud_device/info interface, enabling a malicious actor to execute arbitrary code through a specially crafted post request.

The Impact of CVE-2021-44625

The exploitation of this vulnerability could result in unauthorized execution of arbitrary code by an attacker, potentially leading to system compromise or unauthorized access.

Technical Details of CVE-2021-44625

Vulnerability Description

The vulnerability is linked to a buffer overflow issue in the mentioned interface, allowing attackers to inject and execute arbitrary code on the affected system.

Affected Systems and Versions

Product: TP-LINK WR-886N
Version: 20190826 2.3.8

Exploitation Mechanism

The vulnerability can be exploited through a crafted post request to the /cloud_config/cloud_device/info interface, providing an avenue for attackers to execute malicious code.

Mitigation and Prevention

Immediate Steps to Take

Disable remote access to the router if not required
Regularly monitor for any unusual activity or unauthorized access

Long-Term Security Practices

Keep the router firmware and software updated with the latest security patches
Implement network segmentation to limit the impact of potential intrusions

Patching and Updates

Ensure that the router firmware is updated to the latest version provided by the vendor containing patches for the identified vulnerability.