CVE-2026-97773HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
🔗 CVE IDs covered (1)
📋 Description
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
🎯 Affected products10
- Microsoft 365 Apps for Enterprise for 32-bit Systems
- Microsoft 365 Apps for Enterprise for 64-bit Systems
- Microsoft Office 365 for Mac
- 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 Office LTSC for Mac 2021
- Microsoft Office LTSC for Mac 2024
- Office Online Server
✅ Remediation
KBRelease Notes (Security Update) KBRelease Notes (Security Update) — fixed build 16.0.14334.20974 KBRelease Notes (Security Update) — fixed build 16.0.17932.21056 KBRelease Notes (Security Update) — fixed build https://aka.ms/OfficeSecurityReleases KB5002928 (Security Update) — fixed build 16.0.10417.20228
🔗 References (5)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97773
- referencehttps://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
- referencehttps://learn.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
- patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108860
- referencehttps://support.microsoft.com/help/5002928