CVE-2021-38656 Explained : Impact and Mitigation

Microsoft Word Remote Code Execution Vulnerability was published on September 15, 2021, by Microsoft. It affects Microsoft 365 Apps for Enterprise versions less than 16.0.1 on both 32-bit and x64-based Systems.

Understanding CVE-2021-38656

This CVE identifier refers to a Remote Code Execution vulnerability in Microsoft Word.

What is CVE-2021-38656?

The vulnerability allows a threat actor to remotely execute malicious code on a victim's system through a specially crafted Word document.

The Impact of CVE-2021-38656

With a CVSSv3.1 base score of 7.8, this vulnerability has a high severity level, allowing attackers to take control of affected systems, access sensitive information, and potentially cause widespread damage.

Technical Details of CVE-2021-38656

This section delves into the specifics of the vulnerability.

Vulnerability Description

CVE-2021-38656 enables attackers to execute arbitrary code on a target system by exploiting a flaw in Microsoft Word.

Affected Systems and Versions

Microsoft 365 Apps for Enterprise versions prior to 16.0.1 on 32-bit and x64-based Systems are vulnerable to this exploit.

Exploitation Mechanism

The vulnerability is exploited by enticing a user to open a malicious Word document, triggering the execution of the embedded code.

Mitigation and Prevention

Protecting systems from CVE-2021-38656 requires immediate action and the implementation of robust security practices.

Immediate Steps to Take

Users are advised to update Microsoft 365 Apps for Enterprise to version 16.0.1 or newer to mitigate the risk of exploitation.

Long-Term Security Practices

Regularly update software, educate users on safe browsing habits, and deploy security solutions to detect and prevent similar threats.

Patching and Updates

Microsoft has released security updates for Microsoft 365 Apps for Enterprise to address this vulnerability. Ensure all systems are promptly updated to the latest version to safeguard against potential attacks.