CVE-2026-68811
Received Received - Intake

Type Confusion in Microsoft Office Excel

Publication date: 2026-08-11

Last updated on: 2026-08-11

Assigner: Microsoft Corporation

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

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Meta Information

Published
2026-08-11
Last Modified
2026-08-11
Generated
2026-08-11
AI Q&A
2026-08-11
EPSS Evaluated
N/A
NVD
CVE-2026-68811
EUVD
EUVD-2026-56463

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft office_excel *

Helpful Resources

Exploitability

CWE
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KEV
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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.

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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.

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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