Microsoft Office Remote Code Execution Vulnerability

HIGH 7.8EXPLOITED (CISA KEV)CVE-2017-11826 · Published 13/10/2017 · updated 17/06/2026

Microsoft Office Remote Code Execution Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 03/03/2022. Patch affected systems as an emergency.

Package	Affected versions	Patched versions
office online server microsoft	`= 2016`	No fix yet
office web apps server microsoft	`= 2010= 2013`	No fix yet
sharepoint enterprise server microsoft	`= 2016`	No fix yet
sharepoint server microsoft	`= 2010= 2013`	No fix yet
word microsoft	`= 2007= 2010= 2013= 2016`	No fix yet

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.

References

securityfocus.com/bid/101219 · Broken Link
securitytracker.com/id/1039541 · Broken Link
0patch.blogspot.com/2017/11/0patching-pretty-nasty-microsoft-word.html · Exploit
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11826 · Patch
securingtomorrow.mcafee.com/mcafee-labs/analyzing-microsoft-office-zero-day-exploit-cve-2017-11826-memory-corruption-vulnerability · Broken Link
tarlogic.com/en/blog/exploiting-word-cve-2017-11826 · Exploit
cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
CISA KEV · CVE-2017-11826

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