CVE-2017-11826 remediation guide

Identify the affected asset

Confirm whether Microsoft Office is installed, record the deployed version and installation path, and identify exposed interfaces.

• Record the product name, package or appliance identifier, and installed version.
• Identify internet-facing, administrative, API, and internal access paths.
• Preserve the pre-change configuration and relevant service logs.

Validate the affected-version match

Compare the deployed version with the affected range: 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, Office Online Server., 2016, 2013, 2007. Treat incomplete inventory results as unresolved.

Prioritize with independent signals

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog. Combine this signal with asset criticality, exposure, compensating controls, and business impact.

Apply supported remediation

Apply updates per vendor instructions.

Verify the result

Confirm the resulting version, service health, authentication and access paths, monitoring coverage, and relevant security logs.

• Confirm the expected version and package state.
• Run a functional health check for critical service paths.
• Review authentication, error, application, and security monitoring logs.
• Reassess exposure if the supported fix cannot be applied.