CVE-2026-63529HighCVSS 5.5

Microsoft Office Information Disclosure Vulnerability

Published
August 14, 2026
Last Modified

🔗 CVE IDs covered (1)

📋 Description

Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.

🎯 Affected products10

  • 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
  • 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 KB5002897 (Security Update) — fixed build 16.0.5565.1001

🔗 References (4)