Use After Free Vulnerability in Microsoft Excel by Microsoft
CVE-2025-30393

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft 365 Apps For Enterprise
Microsoft Office Ltsc For Mac 2021
Microsoft Office Ltsc 2021
Microsoft Office Ltsc 2024
Vendor
CVE Published:
13 May 2025

What is CVE-2025-30393?

A vulnerability exists in Microsoft Excel that allows unauthorized code execution due to a Use After Free error. This security flaw can be exploited by an attacker to invoke arbitrary code on a targeted system where the affected software is installed, potentially leading to further system compromise. Users are advised to apply the latest security patches from Microsoft to mitigate this risk and ensure their systems are protected against potential exploitation.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office LTSC 2021 x64-based Systems 16.0.1

Microsoft Office LTSC 2024 32-bit Systems 1.0.0

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

.