CVE-2017-8631

high-risk
Published 2017-09-13

A remote code execution vulnerability exists in Excel Services, Microsoft Excel 2007 Service Pack 3, Microsoft Excel 2010 Service Pack 2, Microsoft Excel 2013 Service Pack 1, Microsoft Excel 2013 RT Service Pack 1, Microsoft Excel 2016, Microsoft Office Web Apps 2013, Microsoft Office Compatibility Pack Service Pack 3, Microsoft Excel Web App 2013 Service Pack 1, Microsoft Excel Viewer 2007 Service Pack 3, and Office Online Server when they fail to properly handle objects in memory, aka "Microsoft Office Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8630, CVE-2017-8632, and CVE-2017-8744.

Do I need to act?

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21.4% chance of exploitation in next 30 days
EPSS score — higher than 79% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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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 (10)

Affected Vendors

Microsoft

References (6)

Third Party Advisory http://www.securityfocus.com/bid/100751
Third Party Advisory http://www.securitytracker.com/id/1039315
Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8631
Third Party Advisory http://www.securityfocus.com/bid/100751
Third Party Advisory http://www.securitytracker.com/id/1039315
Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8631
54
/ 100
high-risk
Severity 24/34 · High
Exploitability 14/34 · Moderate
Exposure 16/34 · Moderate