CVE-2021-39981 Explained : Impact and Mitigation

CVE-2021-39981 relates to a vulnerability in the Chang Lian application on Huawei's HarmonyOS, allowing malicious exploitation to hide the calling number and make anonymous calls.

Understanding CVE-2021-39981

This section provides an overview of the CVE-2021-39981 vulnerability.

What is CVE-2021-39981?

The Chang Lian application vulnerability in HarmonyOS enables the concealment of the calling number, facilitating anonymous call generation.

The Impact of CVE-2021-39981

Exploitation of this vulnerability permits unauthorized users to make anonymous calls without revealing the caller's identity.

Technical Details of CVE-2021-39981

Exploring the specifics of the CVE-2021-39981 vulnerability.

Vulnerability Description

The Chang Lian application vulnerability in HarmonyOS allows for the masking of the calling number, enabling the initiation of calls anonymously.

Affected Systems and Versions

Product: HarmonyOS
Vendor: Huawei
Affected Version: 2.0

Exploitation Mechanism

The vulnerability can be exploited by unauthorized individuals to conceal caller identification and make calls anonymously.

Mitigation and Prevention

Guidelines on how to mitigate and prevent exploitation of CVE-2021-39981.

Immediate Steps to Take

Users should avoid using the affected application until a patch is available.
Consider alternative communication methods to ensure caller identification.

Long-Term Security Practices

Regularly update devices and applications to enhance security.
Review and apply security recommendations from the vendor promptly.

Patching and Updates

Huawei is expected to release a security patch to address the CVE-2021-39981 vulnerability.