CVE-2017-11826
KEVMicrosoft Office Remote Code Execution Vulnerability
Description
A remote code execution vulnerability exists in Microsoft Office software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user.
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.
CVSS 3.1 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HPublishedOct 13, 2017
Last modifiedJun 17, 2026
Added to KEVMar 3, 2022
Remediation dueMar 24, 2022
References
- securityfocus.com/bid/101219Broken LinkThird Party Advisory
- securitytracker.com/id/1039541Broken LinkThird Party Advisory
- 0patch.blogspot.com/2017/11/0patching-pretty-nasty-microsoft-word.htmlExploit
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11826PatchVendor Advisory
- securingtomorrow.mcafee.com/mcafee-labs/analyzing-microsoft-office-zero-day-exploit-cve-2017-11826-memory-corruption-vulnerability/Broken LinkTechnical Description
- tarlogic.com/en/blog/exploiting-word-cve-2017-11826/ExploitThird Party Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-11826US Government Resource
0 recent articles mention this CVE
77
Risk assessment · High
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1678 days
- CVSS
- 7.8 HIGH
- EPSS (30-day exploit probability)
- 81.3% · top 1% of all CVEs
- Weakness
- CWE-119
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.