CVE-2017-11937: Microsoft Malware Protection Engine

High severity, CVSS 7.8. EPSS: 28.3% chance of exploitation in the next 30 days.

The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Windows 7 SP1, Windows 8.1, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, 1709 and Windows Server 2016, Windows Server, version 1709, Microsoft Exchange Server 2013 and 2016, does not properly scan a specially crafted file leading to remote code execution. aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability".

Affected products

• Microsoft Malware Protection Engine: up to and including 1.1.14306.0

Published 2017-12-07. Last modified 2026-06-17.