CVE-2021-46122 : Vulnerability Insights and Analysis

Tp-Link TL-WR840N (EU) v6.20 Firmware is vulnerable to Buffer Overflow via the Password reset feature.

Understanding CVE-2021-46122

This CVE identifies a vulnerability in Tp-Link TL-WR840N (EU) v6.20 Firmware that can be exploited through the Password reset feature.

What is CVE-2021-46122?

The vulnerability in Tp-Link TL-WR840N (EU) v6.20 Firmware allows for Buffer Overflow via the Password reset feature, potentially leading to unauthorized access.

The Impact of CVE-2021-46122

Exploitation of this vulnerability could result in unauthorized users gaining access to the affected system, compromising its security and integrity.

Technical Details of CVE-2021-46122

This section delves into the technical aspects of the CVE.

Vulnerability Description

Tp-Link TL-WR840N (EU) v6.20 Firmware is susceptible to Buffer Overflow through the Password reset feature, which could enable attackers to execute arbitrary code.

Affected Systems and Versions

Product: Tp-Link TL-WR840N (EU)
Firmware Version: v6.20 (0.9.1 4.17 v0001.0 Build 201124 Rel.64328n)

Exploitation Mechanism

The vulnerability can be exploited by crafting malicious inputs that trigger a buffer overflow, allowing attackers to overwrite memory and potentially execute arbitrary code.

Mitigation and Prevention

Steps to mitigate and prevent the exploitation of CVE-2021-46122.

Immediate Steps to Take

Disable remote access to the router if not needed.
Monitor network traffic for any suspicious activities.
Apply security patches provided by the vendor.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Implement strong and unique passwords for network devices.

Patching and Updates

Check for firmware updates from Tp-Link and apply them promptly to address the vulnerability.