CVE-2021-39991 Explained : Impact and Mitigation

This article provides details about an unauthorized rewriting vulnerability affecting Huawei's EMUI version 12.0.0 and its impact.

Understanding CVE-2021-39991

This section delves into the vulnerability and its implications.

What is CVE-2021-39991?

CVE-2021-39991 refers to an unauthorized rewriting vulnerability in the memory access management module on ACPU, potentially leading to a breach of service confidentiality.

The Impact of CVE-2021-39991

The exploitation of this vulnerability may compromise the confidentiality of services provided by the affected system.

Technical Details of CVE-2021-39991

Explore the technical aspects of the vulnerability in detail.

Vulnerability Description

The vulnerability involves unauthorized rewriting within the memory access management module on ACPU, posing a risk to service confidentiality.

Affected Systems and Versions

Vendor: Huawei
Product: EMUI
Vulnerable Version: 12.0.0

Exploitation Mechanism

The vulnerability can be exploited by unauthorized entities to manipulate memory access on ACPU, potentially compromising service confidentiality.

Mitigation and Prevention

Learn about the steps to mitigate and prevent exploitation of CVE-2021-39991.

Immediate Steps to Take

Apply vendor-supplied patches promptly to address the vulnerability.
Monitor system activity for any unauthorized access or abnormal behavior.
Implement strong access control measures to limit system exposure.

Long-Term Security Practices

Regularly update and patch all software and firmware on the affected systems.
Conduct security audits and assessments to identify and remediate any vulnerabilities.
Educate system users on security best practices to prevent exploitation.

Patching and Updates

Huawei may release patches to address CVE-2021-39991. Stay informed about patch releases and apply them as soon as they are available.