Untrusted Pointer Dereference Vulnerability in Microsoft Excel
CVE-2025-62560

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Office Online Server
Microsoft Office 2019
Microsoft 365 Apps For Enterprise
Microsoft Office Ltsc For Mac 2021
Vendor
CVE Published:
9 December 2025

What is CVE-2025-62560?

An untrusted pointer dereference vulnerability exists in Microsoft Excel, which could allow an unauthorized attacker to execute code locally on the affected system. This vulnerability arises from improper validation of input data when processing certain files. Users are advised to apply necessary updates provided by Microsoft to mitigate potential exploitation risks.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Excel 2016 32-bit Systems 16.0.0.0 < 16.0.5530.1000

Microsoft Office 2019 32-bit Systems 19.0.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-62560 : Untrusted Pointer Dereference Vulnerability in Microsoft Excel