CVE-2026-55047

Analyzed Analyzed - Analysis Complete

Microsoft Office Out-of-Bounds Read Vulnerability

Publication date: 2026-07-14

Last updated on: 2026-07-16

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-14

Last Modified

2026-07-16

Generated

2026-08-04

AI Q&A

2026-07-15

EPSS Evaluated

2026-08-02

NVD

CVE-2026-55047

EUVD

EUVD-2026-44179

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	sharepoint_server	2019
microsoft	sharepoint_server	2016
microsoft	365_apps	*
microsoft	365_apps	*
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	*
microsoft	sharepoint_server	to 16.0.19725.20434 (exc)
microsoft	office_online_server	to 16.0.10417.20175 (exc)
microsoft	sharepoint_server	16.0.19725.20434

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 vulnerability is an out-of-bounds read issue in Microsoft Office. It allows an unauthorized attacker to access and disclose information stored locally on a system by reading beyond the intended memory boundaries.

Impact Analysis

An attacker could exploit this to access sensitive data stored on your device, such as documents or personal information, potentially leading to privacy breaches or further attacks.

Compliance Impact

This vulnerability could lead to unauthorized data disclosure, violating GDPR and HIPAA requirements for protecting personal and health information. Organizations may face compliance penalties if exploited.

Mitigation Strategies

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

Hi! I’m here to help you understand CVE-2026-55047. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70