CVE-2026-45455
Undergoing Analysis Undergoing Analysis - In Progress
Out-of-bounds Read in Microsoft Office Excel

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Microsoft Corporation

Description
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
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Meta Information
Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-10
AI Q&A
2026-06-09
EPSS Evaluated
N/A
NVD
CVE-2026-45455
EUVD
EUVD-2026-35539
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-125 The product reads data past the end, or before the beginning, of the intended buffer.
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Executive Summary

This vulnerability is an out-of-bounds read issue in Microsoft Office Excel. It allows an unauthorized attacker to read data beyond the intended memory boundaries, which can lead to the disclosure of sensitive information over a network.

Impact Analysis

The impact of this vulnerability is information disclosure. An attacker exploiting this flaw could gain access to sensitive information from your system without authorization, potentially compromising confidentiality.

Compliance Impact

This vulnerability allows an unauthorized attacker to disclose information over a network due to an out-of-bounds read in Microsoft Office Excel.

Such information disclosure could potentially impact compliance with data protection regulations like GDPR and HIPAA, which require safeguarding sensitive information from unauthorized access.

However, the provided information does not specify exact compliance implications or affected data types.

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