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CVE-2026-26108

Microsoft Office Excel

Microsoft CVSS 7.8 Updated March 15, 2026

Executive Risk Summary

"A heap-based buffer overflow vulnerability in Microsoft Office Excel allows an unauthorized attacker to execute code locally, potentially leading to system compromise. This vulnerability poses a significant risk to systems with vulnerable versions of Microsoft Office Excel installed."

Operational Audit Arsenal

Target Type Executable
Target Asset EXCEL.EXE
Standard Path %ProgramFiles%Microsoft OfficeRootOffice16
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: EXCEL.EXE (Executable)
$Targets = 'EXCEL.EXE'
$SearchPaths = @("$env:windir\System32", "$env:ProgramFiles", "${env:ProgramFiles(x86)}")

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

Patch Impact Forecast

Reboot Required Likely

Microsoft Office Excel service affected

Internal Work Notes

High-priority vulnerability in Microsoft Office Excel requiring immediate patching to prevent code execution attacks

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Intelligence Sources

Related Microsoft Threats

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