CVE-2017-11940

Name: CVE-2017-11940
Creator: NVD / NIST
Published: 2017-12-08T14:29:00.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 19.76%

Last modified Jun 17, 2026

CVE-2017-11940 is a vulnerability of currently unknown severity. 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". EPSS estimates a 19.76% chance of exploitation in the next 30 days.

Description

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". This is different than CVE-2017-11937.

Metrics

EPSS Probability

19.76%

97.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Microsoft	Malware Protection Engine	<= 1.1.14306.0

References

http://www.securityfocus.com/bid/102104Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039972Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11940Patch, Vendor Advisory
http://www.securityfocus.com/bid/102104Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039972Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11940Patch, Vendor Advisory

Timeline

Published: Dec 8, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-11940?

How severe is CVE-2017-11940?

Severity scoring for CVE-2017-11940 is pending analysis. The EPSS model estimates a 19.76% probability of exploitation in the next 30 days.

How do I fix CVE-2017-11940?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-11940?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST