Use After Free Vulnerability in Microsoft Office
CVE-2025-59234

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Office 2016
Microsoft Office 2019
Microsoft 365 Apps For Enterprise
Microsoft Office Ltsc 2021
Vendor
CVE Published:
14 October 2025

What is CVE-2025-59234?

A use after free vulnerability in Microsoft Office allows an unauthorized attacker to leverage this flaw to execute arbitrary code locally. This can result in the potential compromise of sensitive information or disruption of the individual user's system. It is critical for users to apply the latest security updates to mitigate such risks.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 2016 32-bit Systems 16.0.0 < 16.0.5522.1000

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-2025-59234 : Use After Free Vulnerability in Microsoft Office