CVE-2026-68793

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Read in Microsoft Office Excel

Publication date: 2026-08-11

Last updated on: 2026-08-13

Assigner: Microsoft Corporation

Description

Out-of-bounds read 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-2026-68793

EUVD

EUVD-2026-56452

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-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds read vulnerability in Microsoft Office Excel. It allows an unauthorized attacker to execute arbitrary code on a local system by exploiting memory access beyond allocated bounds.

Detection Guidance

This vulnerability involves an out-of-bounds read in Microsoft Office Excel that could allow local code execution. Detection typically requires checking for vulnerable versions of Excel or applying Microsoft's security updates. No specific commands are provided in the available resources.

Impact Analysis

An attacker could exploit this to run malicious code on your computer, potentially stealing data, installing malware, or taking control of your system. It requires user interaction, such as opening a specially crafted file.

Compliance Impact

This vulnerability allows unauthorized code execution locally, which could lead to unauthorized access to sensitive data. This may impact compliance with standards like GDPR (data protection) and HIPAA (health information privacy) by increasing the risk of data breaches or unauthorized data access.

Mitigation Strategies

Apply the latest security updates from Microsoft for Office Excel as soon as possible to patch the out-of-bounds read vulnerability.

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