CVE-2021-42892 : Vulnerability Insights and Analysis

In TOTOLINK EX1200T V4.1.2cu.5215, an attacker can start telnet without authorization due to the default credentials present in the firmware.

Understanding CVE-2021-42892

In this CVE, unauthorized telnet access is possible on TOTOLINK EX1200T V4.1.2cu.5215.

What is CVE-2021-42892?

This CVE allows attackers to initiate telnet sessions without proper authorization by exploiting default credentials in the firmware.

The Impact of CVE-2021-42892

The vulnerability enables unauthorized access to the system, posing a significant security risk to affected devices.

Technical Details of CVE-2021-42892

In-depth analysis of the technical aspects of the CVE.

Vulnerability Description

An attacker can exploit the default username and password in the firmware to access telnet without authorization.

Affected Systems and Versions

Product: TOTOLINK EX1200T V4.1.2cu.5215
Vendor: n/a
Versions: n/a

Exploitation Mechanism

The presence of default credentials in the firmware allows attackers to bypass authentication and establish unauthorized telnet connections.

Mitigation and Prevention

Steps to address and prevent exploitation of CVE-2021-42892.

Immediate Steps to Take

Change default credentials immediately to unique, strong passwords.
Disable telnet services if not essential for operations.

Long-Term Security Practices

Regularly update firmware to patched versions.
Implement strong password policies and multi-factor authentication.

Patching and Updates

Apply vendor-recommended patches and updates to remove the vulnerability and enhance system security.