Remote Code Execution Flaw in Microsoft Office Excel Affects User Security
CVE-2025-59236

8.4HIGH

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:
14 October 2025

What is CVE-2025-59236?

A vulnerability in Microsoft Office Excel allows an unauthorized attacker to exploit a use after free condition, potentially enabling the execution of arbitrary code on the affected system. This flaw poses a significant risk to users as it may lead to unauthorized access and control over sensitive data. It is crucial for users to remain vigilant and apply security updates to mitigate the risks posed by this vulnerability.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 2019 32-bit Systems 19.0.0

Microsoft Office LTSC 2021 x64-based Systems 16.0.1

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

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CVE-2025-59236 : Remote Code Execution Flaw in Microsoft Office Excel Affects User Security