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Vulnerabilities

Vulnerability · CVE-2017-11940

CVE-2017-11940 is listed by inventory_critical.

Published Dec 8, 2017 · catalog updated Jun 17, 2026 · malware protection engine

Last checked Nov 8, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2017-11940 is not in CISA KEV. FIRST estimates a 20.51% chance of exploitation in the next 30 days. Check whether you run malware protection engine.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
20.51%
Remediation
Version ranges on file
Affected products
cpe microsoft/malware protection engine

CVE-2017-11940 is listed by inventory_critical.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/malware protection engine<= 1.1.14306.0

How to fix CVE-2017-11940

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2017-11940 is not in CISA KEV. FIRST estimates a 20.51% chance of exploitation in the next 30 days. Check whether you run malware protection engine.

Which versions are affected?

Compare what you have installed with microsoft/malware protection engine <= 1.1.14306.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-119: Buffer Overflow. EPSS 20.51%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 8, 2017 · Monitored products — critical

    Detected

    CVE-2017-11940 is listed by inventory_critical.

  2. Jun 17, 2026 · Monitored products — critical

    Updated

    CVE-2017-11940 is listed by inventory_critical.

Sources

  • CVE.orgVulnerability recordCVE-2017-11940

    Official CVE identifier

    cve.org
  • Monitored products — criticalVendor advisoryCVE-2017-11940

    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 Eng

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Monitored products — criticalNov 8, 2026
  • CVE.orgNov 2, 2026