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CVE-2025-21366

Target: Microsoft Office - Access

Microsoft CVSS 7.8 Updated March 10, 2026
Threat Level HIGH

Executive Risk Summary

"A remote code execution vulnerability exists in Microsoft Access, which could allow an attacker to execute arbitrary code on a vulnerable system. This vulnerability can be exploited by an attacker who sends a specially crafted file to a user, who then opens the file in Microsoft Access."

Operational Audit Arsenal

Target Type Application
Target Asset Microsoft Access
Standard Path Installed Applications
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: Microsoft Access (Application)
$Target = "Microsoft Access"
$SearchPaths = @("$env:windir\System32", "$env:ProgramFiles", "${env:ProgramFiles(x86)}")

Get-ChildItem -Path $SearchPaths -Filter $Target -Recurse -ErrorAction SilentlyContinue | 
Select-Object FullName, @{Name="Version";Expression={$_.VersionInfo.ProductVersion}}

Patch Impact Forecast

Reboot Required Required
Service Disruption

Low to Moderate

Internal Work Notes

Apply the latest security updates from Microsoft to mitigate this vulnerability, and consider implementing additional security measures such as restricting access to Microsoft Access and monitoring for suspicious activity.

Intelligence Sources

Scope of Impact

365 Apps Office (Version 2019) Access (Version 2016) Office Long Term Servicing Channel (Version 2024) Office Long Term Servicing Channel (Version 2021)

Original NVD Description

"Microsoft Access Remote Code Execution Vulnerability"

Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.