CVE-2025-62556HighCVSS 7.8

Microsoft Excel Remote Code Execution Vulnerability

Published
December 9, 2025
Last Modified
—

🔗 CVE IDs covered (1)

📋 Description

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

🎯 Affected products13

  • 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
  • Microsoft Office LTSC for Mac 2021
  • Microsoft Office LTSC for Mac 2024
  • Office Online Server

✅ Remediation

KB5002817 (Security Update) — fixed build 16.0.10417.20075 KBClick to Run (Security Update) — fixed build https://aka.ms/OfficeSecurityReleases KBRelease Notes (Security Update) — fixed build 16.104.25121423 KB5002820 (Security Update) — fixed build 16.0.5530.1000

🔗 References (7)