CVE-2026-68811

Analyzed Analyzed - Analysis Complete

Type Confusion in Microsoft Office Excel

Publication date: 2026-08-11

Last updated on: 2026-08-13

Assigner: Microsoft Corporation

Description

Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-11

Last Modified

2026-08-13

Generated

2026-09-01

AI Q&A

2026-08-11

EPSS Evaluated

2026-08-30

NVD

CVE-2026-68811

EUVD

EUVD-2026-56463

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	365_apps	*
microsoft	365_apps	*
microsoft	excel	2016
microsoft	excel	2016
microsoft	office_2019	*
microsoft	office_2019	*
microsoft	microsoft_365	*
microsoft	office_2021	*
microsoft	office_2021	*
microsoft	office_2021	*
microsoft	office_2024	*
microsoft	office_2024	*
microsoft	office_2024	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-843	The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

Attack-Flow Graph

Executive Summary

This vulnerability is a type confusion issue in Microsoft Office Excel. It allows an attacker to execute arbitrary code locally by exploiting how Excel handles different data types. The flaw occurs when Excel incorrectly interprets or processes incompatible types, leading to unexpected behavior that can be manipulated to run malicious code.

Detection Guidance

This vulnerability involves type confusion in Microsoft Office Excel leading to remote code execution. Detection typically requires checking for specific Excel file patterns or behaviors. Use Microsoft's official update guide to verify if your Excel version is patched. No direct detection commands are provided in the available resources.

Impact Analysis

An attacker could exploit this to run malicious code on your system if you open a specially crafted Excel file. This could lead to unauthorized access, data theft, or further compromise of your device. The impact includes potential loss of sensitive information or system control.

Compliance Impact

This vulnerability could lead to data breaches, which may violate GDPR or HIPAA requirements for protecting personal or health data. Organizations affected by such breaches may face legal penalties, reputational damage, and compliance violations due to unauthorized code execution.

Mitigation Strategies

Apply the latest security updates from Microsoft for Office Excel as soon as possible to patch the type confusion vulnerability.

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