What’s Vulnerable › Vulnerabilities

CVE-2023-33156: Microsoft Defender Elevation of Privilege Vulnerability

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-07-11 · updated 2026-06-17
• Weakness: CWE-367

Description

Microsoft Defender Elevation of Privilege Vulnerability

Affected products

• Microsoft Malware Protection Engine: before 1.1.23050.3 — fixed in 1.1.23050.3
• Microsoft Malware Protection Engine: from 1.1.0.0 before 1.1.23050.3 — fixed in 1.1.23050.3

How to fix

Upgrade to a fixed version: Microsoft Malware Protection Engine 1.1.23050.3; Microsoft Malware Protection Engine 1.1.23050.3. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33156
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33156

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