Microsoft Word Information Disclosure Vulnerability

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products10

• Microsoft 365 Apps for Enterprise for 32-bit Systems
• Microsoft 365 Apps for Enterprise for 64-bit Systems
• Microsoft Office 2019 for 32-bit editions
• Microsoft Office 2019 for 64-bit editions
• Microsoft Office LTSC 2021 for 32-bit editions
• Microsoft Office LTSC 2021 for 64-bit editions
• Microsoft Office LTSC 2024 for 32-bit editions
• Microsoft Office LTSC 2024 for 64-bit editions
• Microsoft Word 2016 (32-bit edition)
• Microsoft Word 2016 (64-bit edition)

✅ Remediation

KBClick to Run (Security Update) — fixed build https://aka.ms/OfficeSecurityReleases KB5002858 (Security Update) — fixed build 16.0.5552.1000

🔗 References (4)

• advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40421
• referencehttps://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
• patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108649
• referencehttps://support.microsoft.com/help/5002858