What’s Vulnerable › Vulnerabilities

CVE-2023-24860: Microsoft Defender Denial of Service Vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-11 · updated 2026-06-17
• Weakness: CWE-400

Description

Microsoft Defender Denial of Service Vulnerability

Affected products

• Microsoft Malware Protection Engine: before 1.1.20200.4 — fixed in 1.1.20200.4
• Microsoft Malware Protection Engine: from 1.1.0.0 before 1.1.20200.4 — fixed in 1.1.20200.4

How to fix

Upgrade to a fixed version: Microsoft Malware Protection Engine 1.1.20200.4; Microsoft Malware Protection Engine 1.1.20200.4. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24860
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24860

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