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Vulnerabilities

Vulnerability · CVE-2017-11826

Microsoft Office Remote Code Execution Vulnerability

Published Sep 28, 2017 · catalog updated Jun 16, 2026 · Microsoft Office

Patch now

CVE-2017-11826 is in the CISA known-exploited catalog, due Mar 24, 2022. Confirm Microsoft Office against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
81.33%
Remediation
Remediation guidance
Affected products
cpe microsoft/office compatibility pack · cpe microsoft/office online server · cpe microsoft/office web apps server · cpe microsoft/office word viewer · cpe microsoft/sharepoint enterprise server · cpe microsoft/sharepoint server

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/office compatibility packversion unspecified
  • cpe microsoft/office online server2016
  • cpe microsoft/office web apps server2010
  • cpe microsoft/office web apps server2013
  • cpe microsoft/office word viewerversion unspecified
  • cpe microsoft/sharepoint enterprise server2016
  • cpe microsoft/sharepoint server2010
  • cpe microsoft/sharepoint server2013
  • vendor Microsoft Officeversion unspecified

How to fix CVE-2017-11826

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2017-11826 is in the CISA known-exploited catalog, due Mar 24, 2022. Confirm Microsoft Office against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with microsoft/office online server 2016; microsoft/office web apps server 2010; microsoft/office web apps server 2013; microsoft/sharepoint enterprise server 2016. Apply updates per vendor instructions.

What should an analyst verify?

CWE-119: Buffer Overflow. EPSS 81.33%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 13, 2017 · Catalog

    Detected

    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.

  2. Mar 3, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Mar 24, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2017-11826

    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.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2017-11826

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2017-11826

    30-day exploitation probability 81.3%

    first.org
  • NIST NVDVulnerability recordCVE-2017-11826

    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

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2017-11826

    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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.