CVE-2017-11826
High 7.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Microsoft Office Remote Code Execution Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
Microsoft Office 2010, SharePoint Enterprise Server 2010, SharePoint Server 2010, Web Applications, Office Web Apps Server 2010 and 2013, Word Viewer, Word 2007, 2010, 2013 and 2016, Word Automation Services, and Office Online Server allow remote code execution when the software fails to properly handle objects in memory.
Metrics
- CVSS 3.1
-
7.8 (HIGH)
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 81% (percentile: 100) as of 1 November 2026
- CWE
- CWE-119
Affected products
microsoft: office compatibility pack; microsoft: office online server; microsoft: office web apps server; microsoft: office word viewer; microsoft: sharepoint enterprise server; microsoft: sharepoint server; microsoft: word
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-118… PatchVendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-118… PatchVendor Advisory
- https://0patch.blogspot.com/2017/11/0patching-pretty-nasty-microsoft-word.html Exploit
- https://www.tarlogic.com/en/blog/exploiting-word-cve-2017-11826/ ExploitThird Party Advisory
- https://0patch.blogspot.com/2017/11/0patching-pretty-nasty-microsoft-word.html Exploit
- https://www.tarlogic.com/en/blog/exploiting-word-cve-2017-11826/ ExploitThird Party Advisory
- http://www.securityfocus.com/bid/101219 Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039541 Broken LinkThird Party AdvisoryVDB Entry
- https://securingtomorrow.mcafee.com/mcafee-labs/analyzing-microsoft-office-zero… Broken LinkTechnical DescriptionThird Party Advisory
- http://www.securityfocus.com/bid/101219 Broken LinkThird Party AdvisoryVDB Entry