CVE-2017-8631

Name: CVE-2017-8631
Creator: NVD / NIST
Published: 2017-09-13T01:29:09.66+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 16.36%

Last modified Jun 17, 2026

CVE-2017-8631 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 16.36% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

16.36%

96.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions	Update
Microsoft	Excel	2007	—
Microsoft	Excel	2010	—
Microsoft	Excel	2013	—
Microsoft	Excel	2016	—
Microsoft	Excel Viewer	2007	Sp3
Microsoft	Excel Web App	2013	Sp1
Microsoft	Office Compatibility Pack	All versions	Sp3
Microsoft	Office Online Server	All versions	—
Microsoft	Office Web Apps	2013	—

References

http://www.securityfocus.com/bid/100751Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039315Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8631Patch, Vendor Advisory
http://www.securityfocus.com/bid/100751Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039315Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8631Patch, Vendor Advisory

Timeline

Published: Sep 13, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-8631?

How severe is CVE-2017-8631?

CVE-2017-8631 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 16.36% probability of exploitation in the next 30 days.

How do I fix CVE-2017-8631?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-8631?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST