Microsoft Excel Remote Code Execution Vulnerability
CVE-2025-21390

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:
11 February 2025

What is CVE-2025-21390?

A vulnerability in Microsoft Excel allows an attacker to execute arbitrary code on the affected system when a user opens a specially crafted Excel file. This security flaw can lead to unauthorized access and potential system compromise, making it essential for users to apply relevant security patches and exercise caution when handling unfamiliar documents.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Excel 2016 32-bit Systems 16.0.0.0 < 16.0.5487.1000

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

.
CVE-2025-21390 : Microsoft Excel Remote Code Execution Vulnerability