Microsoft Office Excel Remote Code Execution Vulnerability
CVE-2026-97746

8.8HIGH

Key Information:

Vendor: Microsoft
Status: Microsoft 365 Apps For Enterprise; Microsoft Office 365 For Mac; Microsoft Office Ltsc 2021; Microsoft Office Ltsc 2024
Vendor: CVE Published:; 13 October 2026

What is CVE-2026-97746?

Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 365 for Mac 1.0.0

Microsoft Office LTSC 2021 32-bit Systems 16.0.1 < 16.0.14334.20974

Score:

8.8

Severity:

HIGH

Confidentiality:

High

Integrity:

High

Availability:

High

Attack Vector:

Network

Attack Complexity:

Low

Privileges Required:

None

User Interaction:

Required

Scope:

Unchanged

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CVE-2026-97746 Data