CVE-2026-45463
Undergoing Analysis Undergoing Analysis - In Progress
Heap-based Buffer Overflow in Microsoft Office

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Microsoft Corporation

Description
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
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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-2026-45463
EUVD
EUVD-2026-35543
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft office *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-191 The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
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Executive Summary

This vulnerability is a heap-based buffer overflow found in Microsoft Office. It allows an unauthorized attacker to execute code locally on the affected system.

Impact Analysis

The vulnerability can lead to remote code execution, meaning an attacker could run malicious code on your system without your permission. This can compromise the confidentiality, integrity, and availability of your data and system.

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