Use After Free Vulnerability in Microsoft Office Software
CVE-2025-53731

8.4HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Office 2019
Microsoft 365 Apps For Enterprise
Microsoft Office Ltsc For Mac 2021
Microsoft Office Ltsc 2021
Vendor
CVE Published:
12 August 2025

What is CVE-2025-53731?

A use after free vulnerability exists in Microsoft Office, which can potentially allow an unauthorized attacker to execute arbitrary code on the affected systems. This vulnerability arises due to improper handling of objects in memory, leading to a situation where an attacker can exploit the flaw to run malicious code. Users are advised to apply security updates and follow best practices for securing their Microsoft Office installations to mitigate this risk.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 2016 32-bit Systems 16.0.0 < 16.0.5513.1000

Microsoft Office 2019 32-bit Systems 19.0.0

References

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

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-53731 : Use After Free Vulnerability in Microsoft Office Software