Use After Free Vulnerability in Microsoft Office Excel
CVE-2025-27751

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:
8 April 2025

What is CVE-2025-27751?

A use after free vulnerability in Microsoft Office Excel can be exploited by attackers to execute arbitrary code on a user's system. This occurs when the application incorrectly manages memory, allowing unauthorized access to execute potentially harmful commands. Users of affected Excel versions should ensure their software is updated to mitigate risks associated with this vulnerability.

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Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Excel 2016 32-bit Systems 16.0.0.0 < 16.0.5495.1000

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

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