CVE-2026-62870HighCVSS 8.8

Microsoft Excel Remote Code Execution Vulnerability

Published
July 31, 2026
Last Modified
—

🔗 CVE IDs covered (1)

📋 Description

Use after free 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 Excel 2016 (32-bit edition)
  • Microsoft Excel 2016 (64-bit edition)
  • 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

✅ Remediation

KBClick to Run (Security Update) — fixed build https://aka.ms/OfficeSecurityReleases KB5002886 (Security Update) — fixed build 16.0.5561.1001

🔗 References (4)