CVE-2026-97011

Undergoing Analysis Undergoing Analysis - In Progress

Use of Uninitialized Resource in Microsoft Office Excel Allows Remote Code Execution

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-13

Generated

2026-10-14

AI Q&A

2026-10-14

EPSS Evaluated

N/A

NVD

CVE-2026-97011

EUVD

EUVD-2026-100293

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Microsoft	365 Apps for Enterprise 16.0.1
Microsoft	Microsoft	Office 365 for Mac 1.0.0
Microsoft	Microsoft	Office LTSC 2021 16.0.1
Microsoft	Microsoft	Office LTSC 2024 16.0.0
Microsoft	Microsoft	Office LTSC for Mac 2021 16.0.1
Microsoft	Microsoft	Office LTSC for Mac 2024 16.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-763	The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.
CWE-908	The product uses or accesses a resource that has not been initialized.

Attack-Flow Graph

Executive Summary

This vulnerability involves Microsoft Office Excel using an uninitialized resource, which an unauthorized attacker could exploit over a network to execute arbitrary code on a victim's system.

Impact Analysis

An attacker could gain control of your system, steal data, install malware, or perform other malicious actions by exploiting this flaw in Microsoft Office Excel.

Mitigation Strategies

Apply the latest security updates from Microsoft for affected Office products. Disable Excel macros if not required and restrict network access to Office applications until patches are applied.

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