CVE-2026-64918HighCVSS 6.5
Microsoft Office Spoofing Vulnerability
🔗 CVE IDs covered (1)
📋 Description
Insufficiently protected credentials in Microsoft Office allows an unauthorized attacker to perform spoofing over a network.
🎯 Affected products6
- Microsoft 365 Apps for Enterprise for 32-bit Systems
- Microsoft 365 Apps for Enterprise for 64-bit Systems
- Microsoft Office 2016 (32-bit edition)
- Microsoft Office 2016 (64-bit edition)
- Microsoft Office 2019 for 32-bit editions
- Microsoft Office 2019 for 64-bit editions
✅ Remediation
KBClick to Run (Security Update) — fixed build https://aka.ms/OfficeSecurityReleases KBRelease Notes (Security Update) — fixed build https://aka.ms/OfficeSecurityReleases KB5002916 (Security Update) — fixed build 16.0.5569.1003
🔗 References (4)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64918
- referencehttps://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
- referencehttps://learn.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
- referencehttps://support.microsoft.com/help/5002916