CVE-2017-8540

critical-risk
Published 2017-05-26

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.

Do I need to act?

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84.6% chance of exploitation in next 30 days
EPSS score — higher than 15% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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1 public exploit available
42088
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (11)

Affected Vendors

Microsoft

References (9)

Broken Link http://www.securityfocus.com/bid/98703
Broken Link http://www.securitytracker.com/id/1038571
Mitigation https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8540
Exploit https://www.exploit-db.com/exploits/42088/
Broken Link http://www.securityfocus.com/bid/98703
Broken Link http://www.securitytracker.com/id/1038571
Mitigation https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8540
Exploit https://www.exploit-db.com/exploits/42088/
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-...
74
/ 100
critical-risk
Severity 24/34 · High
Exploitability 34/34 · Critical
Exposure 16/34 · Moderate