CVE-2021-21725 : What You Need to Know

A ZTE product, ZXHN H196Q V9.1.0C2, is vulnerable to an information leak, allowing attackers with higher authority to access files in other directories, leading to unauthorized information disclosure.

Understanding CVE-2021-21725

This CVE identifies an information leak vulnerability in the ZXHN H196Q router.

What is CVE-2021-21725?

CVE-2021-21725 is associated with an information leak vulnerability in the ZXHN H196Q router. Attackers with elevated privileges can exploit this issue to access files outside their authorized directories.

The Impact of CVE-2021-21725

The vulnerability can result in unauthorized disclosure of sensitive information stored on the affected device, potentially leading to privacy breaches and unauthorized access to confidential data.

Technical Details of CVE-2021-21725

This section provides technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows attackers with higher authority to breach directory restrictions and access files in other directories.

Affected Systems and Versions

Affected Product: ZXHN H196Q
Affected Version: V9.1.0C2

Exploitation Mechanism

Attackers can exploit specific operations to access files in unauthorized directories, resulting in an information leak.

Mitigation and Prevention

To address CVE-2021-21725, follow these mitigation strategies.

Immediate Steps to Take

Update the firmware to the latest version provided by ZTE to patch the vulnerability.

Long-Term Security Practices

Regularly monitor for security patches and updates from ZTE to protect against known vulnerabilities.

Patching and Updates

Stay informed about security advisories from ZTE and promptly apply recommended patches to secure the device.