Use After Free Vulnerability in Microsoft Office
CVE-2025-30386

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:
13 May 2025

What is CVE-2025-30386?

A use after free vulnerability exists in Microsoft Office that allows an attacker to execute arbitrary code locally. This flaw stems from improper management of memory that can be exploited by an unauthorized user to gain control over affected systems, posing a significant security risk. Organizations using Microsoft Office should apply the latest updates to mitigate this issue and enhance their cybersecurity posture.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 2016 32-bit Systems 16.0.0 < 16.0.5500.1002

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-2025-30386 : Use After Free Vulnerability in Microsoft Office