Vulnerability in Microsoft Corporation Malware Protection Engine

CVE-2017-8540

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, 15…

EPSS: 0.794 (99.1th percentile) — read the EPSS interpretation.

Affected products

  • Microsoft Corporation Malware Protection Engine — versions 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.

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2017-8540?
CVE-2017-8540 is a vulnerability in Microsoft Corporation Malware Protection Engine. Published 2017-05-26.
Is CVE-2017-8540 known to be exploited?
Yes. CVE-2017-8540 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.