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CVE-2017-8540: Microsoft Malware Protection Engine Improper Restriction of Operations Vulnerability
Microsoft Malware Protection Engine · in CISA KEV since 2022-03-03
2022-03-03added to KEV
2022-03-24federal remediation due date
71.87%EPSS exploit probability (30 days) 99.4th percentile
7.8 HIGHCVSS 3.1
Unknownknown ransomware use
1,742days from NVD publication to KEV
What it is
The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016, Microsoft Exchange Server 2013 and 2016, does not properly scan a specially crafted file leading to memory corruption. aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability".
Required action (CISA)
Apply updates per vendor instructions.
| CWE | CWE-119 |
|---|---|
| CVSS vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD published | 2017-05-26 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2017-8540.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.