Handling Zero-Day Vulnerabilities with Microsoft Defender Vulnerability Management

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Introduction

In today’s rapidly evolving cyber threat landscape, security engineers and vulnerability managers must be prepared to handle zero-day vulnerabilities. This blog post focuses on using Microsoft Defender Vulnerability Management to detect, prioritize, and remediate these critical threats.

How Defender Vulnerability Management Detects Zero-Days

Microsoft Defender Vulnerability Management leverages a variety of sources to identify zero-day vulnerabilities. These include third-party vulnerability databases, in-house research, and threat intelligence feeds.

Prioritizing Zero-Day Remediation Using CVSS and Exposure Scores

To prioritize remediation efforts, Defender Vulnerability Management assigns each vulnerability a Common Vulnerability Scoring System (CVSS) score. Additionally, it calculates an exposure score based on factors such as the number of affected devices and the severity of the vulnerability.

Applying Mitigations Before Patches Are Available

In some cases, patches may not be immediately available for a zero-day vulnerability. Defender Vulnerability Management can help by recommending mitigations that can be applied to reduce the risk of exploitation.

Using Threat Analytics to Understand Zero-Day Impact

By monitoring threat analytics, security engineers can gain insight into the potential impact of a zero-day vulnerability. This information can help inform remediation efforts and prioritize affected devices for patching.

Tracking Zero-Day Remediation Status in Defender Portal

The Defender portal allows security engineers to track the status of zero-day vulnerability remediation efforts. This includes viewing which devices have been patched and which still require attention.

Conclusion

With Microsoft Defender Vulnerability Management, organizations can more effectively handle zero-day vulnerabilities. To learn more about Defender Vulnerability Management and other cloud security topics, visit our Microsoft Cloud Security Training page.

Key Takeaway: Apply the steps and concepts in this post to strengthen your Microsoft IT environment. Ready to go deeper? Explore our hands-on training below.

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Written by Mohammed Akhter

Founder of ITP Training. 50,000+ students trained across 30+ countries in Microsoft endpoint and cloud security. Learn more →