# 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, 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", a different vulnerability than CVE-2017-8538 and CVE-2017-8541.

- Page: https://www.vulneraibility.com/cve/CVE-2017-8540
- CVSS: 7.8
- Known exploited: yes, in CISA KEV since 2022-03-03; CISA due date 2022-03-24
- EPSS: 71.87% (percentile 99.4)
- Public exploit code: 1 on Exploit-DB (first 2017-05-30)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-02-10)
- Weakness: CWE-787
- Published: 2017-05-26

## Affected versions

- Microsoft Corporation Malware Protection Engine: affected 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.

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8540
- [other] http://www.securityfocus.com/bid/98703
- [exploit] https://www.exploit-db.com/exploits/42088/
- [other] http://www.securitytracker.com/id/1038571
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-8540

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.