Use After Free Vulnerability in Microsoft Office
CVE-2025-27746

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-2025-27746?

A use after free vulnerability in Microsoft Office could allow an unauthorized attacker to execute arbitrary code locally on an affected system. Attackers can exploit this weakness to manipulate memory in a way that presents an opportunity for remote code execution, potentially leading to data breaches or system compromises. It is important for users to apply the latest security updates to mitigate the risks associated with this vulnerability. More details can be found in the Microsoft vendor advisory.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 2016 32-bit Systems 16.0.0 < 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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CVE-2025-27746 : Use After Free Vulnerability in Microsoft Office