CVE-2021-43875 : What You Need to Know

A Microsoft Office Graphics Remote Code Execution Vulnerability was published on December 15, 2021, with a CVSS base score of 7.8.

Understanding CVE-2021-43875

This CVE involves a high-severity Remote Code Execution vulnerability in Microsoft Office products.

What is CVE-2021-43875?

The vulnerability allows attackers to execute arbitrary code remotely, compromising the affected systems' security.

The Impact of CVE-2021-43875

Exploitation of this vulnerability can lead to unauthorized access, data manipulation, and potential system compromise.

Technical Details of CVE-2021-43875

This section provides more insights into the specifics of the vulnerability.

Vulnerability Description

The vulnerability in Microsoft Office products permits remote attackers to execute malicious code.

Affected Systems and Versions

Microsoft Office 2019 (Version 19.0.0) for 32-bit and x64-based Systems
Microsoft Office 2019 for Mac (Version 16.0.0)
Microsoft 365 Apps for Enterprise (Version 16.0.1) for 32-bit and x64-based Systems
Microsoft Office LTSC for Mac 2021 (Version 16.0.1)
Microsoft Office LTSC 2021 (Version 16.0.1) for x64-based and 32-bit Systems

Exploitation Mechanism

The vulnerability can be exploited by luring a user to open a specially crafted file, triggering the execution of malicious code.

Mitigation and Prevention

To protect systems from CVE-2021-43875, consider the following steps:

Immediate Steps to Take

Apply security patches provided by Microsoft promptly.
Educate users on identifying and avoiding suspicious files or links.
Utilize security solutions to detect and block malicious activities.

Long-Term Security Practices

Regularly update software and security solutions to defend against emerging threats.
Implement network segmentation to contain potential breaches and limit lateral movement.

Patching and Updates

Ensure all Microsoft Office products are updated with the latest security patches.