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Multiple Microsoft Office Excel and Word Vulnerabilities

Severity

High

Analysis Summary

CVE-2025-62553 CVSS:7.8

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2025-62556 CVSS:7.8

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

CVE-2025-62560 CVSS:7.8

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

CVE-2025-62561 CVSS:7.8

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

CVE-2025-62563 CVSS:7.8

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2025-62564 CVSS:7.8

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2025-62555 CVSS:7

Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.

CVE-2025-62558 CVSS:7.8

Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.

CVE-2025-62559 CVSS:7.8

Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Impact

  • Code Execution

Indicators of Compromise

CVE

  • CVE-2025-62553
  • CVE-2025-62556
  • CVE-2025-62560
  • CVE-2025-62561
  • CVE-2025-62563
  • CVE-2025-62564
  • CVE-2025-62555
  • CVE-2025-62558
  • CVE-2025-62559

Affected Vendors

  • Microsoft

Affected Products

  • Microsoft Office LTSC for Mac 2021
  • Microsoft 365 Apps for Enterprise for 32-bit Systems
  • Microsoft 365 Apps for Enterprise for 64-bit Systems
  • 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 64-bit editions
  • Microsoft Office LTSC 2024 for 32-bit editions
  • Microsoft Office LTSC for Mac 2024
  • Microsoft Excel 2016 (64-bit edition)
  • Microsoft Excel 2016 (32-bit edition)
  • Microsoft Word 2016 (64-bit edition)
  • Microsoft Word 2016 (32-bit edition)

Remediation

Use Microsoft Automatic Update to apply the appropriate patch for your system, or the Microsoft Security Update Guide to search for available patches.

CVE-2025-62553

CVE-2025-62556

CVE-2025-62560

CVE-2025-62561

CVE-2025-62563

CVE-2025-62564

CVE-2025-62555

CVE-2025-62558

CVE-2025-62559