CVE-2021-31978 : Security Advisory and Response

A detailed overview of the Microsoft Defender Denial of Service Vulnerability (CVE-2021-31978) including its impact, technical details, and mitigation strategies.

Understanding CVE-2021-31978

This section provides insights into the nature of the vulnerability and its implications.

What is CVE-2021-31978?

The CVE-2021-31978 is a Denial of Service vulnerability affecting Microsoft Malware Protection Engine with specific vulnerable versions.

The Impact of CVE-2021-31978

The vulnerability could allow attackers to launch Denial of Service attacks, potentially disrupting the Microsoft Malware Protection Engine's functionality.

Technical Details of CVE-2021-31978

Explore the technical aspects of the CVE-2021-31978 vulnerability in this section.

Vulnerability Description

The Microsoft Defender Denial of Service Vulnerability is rated as MEDIUM severity with a CVSS base score of 5.5.

Affected Systems and Versions

The vulnerability impacts systems running Microsoft Malware Protection Engine version 1.1.0.0 up to version 1.1.18200.3.

Exploitation Mechanism

Attackers can exploit this vulnerability to trigger a Denial of Service condition in the Malware Protection Engine, potentially causing system unavailability.

Mitigation and Prevention

Learn how to safeguard your systems against CVE-2021-31978 with effective mitigation strategies.

Immediate Steps to Take

Update Microsoft Malware Protection Engine to version 1.1.18200.3 to prevent exploitation.
Employ network security measures to detect and block malicious attempts.

Long-Term Security Practices

Regularly update security patches and software versions to protect against known vulnerabilities.

Patching and Updates

Stay informed about security advisories from Microsoft and promptly apply recommended patches to mitigate emerging threats.