CVE-2013-1346: Microsoft Malware Protection Engine

High severity, CVSS 9.3. EPSS: 11.6% chance of exploitation in the next 30 days.

mpengine.dll in Microsoft Malware Protection Engine before 1.1.9506.0 on x64 platforms allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted file.

Affected products

• Microsoft Malware Protection Engine: up to and including 1.1.9402.0

Published 2013-05-15. Last modified 2026-06-16.