CVE-2021-39986 Explained : Impact and Mitigation

This article provides an overview of CVE-2021-39986, detailing the unauthorized rewriting vulnerability affecting Huawei's EMUI 12.0.0.

Understanding CVE-2021-39986

CVE-2021-39986 is a vulnerability related to memory access management on ACPU, potentially leading to a breach in service confidentiality.

What is CVE-2021-39986?

The unauthorized rewriting vulnerability in the memory access management module on ACPU can be exploited to compromise service confidentiality.

The Impact of CVE-2021-39986

Successful exploitation of this vulnerability may have severe consequences on the confidentiality of services.

Technical Details of CVE-2021-39986

CVE-2021-39986 involves the following technical aspects:

Vulnerability Description

Type: Unauthorized rewriting vulnerability
Description: Vulnerability in the memory access management module on ACPU

Affected Systems and Versions

Vendor: Huawei
Affected Product: EMUI
Version: 12.0.0

Exploitation Mechanism

Attackers can exploit the vulnerability to gain unauthorized access and compromise service confidentiality.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2021-39986.

Immediate Steps to Take

Update EMUI to a non-vulnerable version.
Implement network segmentation to limit exposure.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update software and security patches.
Conduct security audits and assessments periodically.
Educate users and employees on cybersecurity best practices.

Patching and Updates

Huawei may release patches or updates to address the vulnerability; apply them promptly to secure systems.