CVE-2026-63515
Received Received - Intake

Out-of-Bounds Read in Microsoft Office

Publication date: 2026-08-11

Last updated on: 2026-08-11

Assigner: Microsoft Corporation

Description
Out-of-bounds read in Microsoft Office 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-2026-63515
EUVD
EUVD-2026-56420

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

Attack-Flow Graph

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Executive Summary

This is an out-of-bounds read vulnerability in Microsoft Office. It allows an unauthorized attacker to execute code locally by reading memory outside the intended buffer. This can lead to arbitrary code execution on the affected system.

Impact Analysis

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

Mitigation Strategies

Apply the latest security updates from Microsoft for Office products to patch the out-of-bounds read vulnerability.

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