CVE-2026-69626

Analyzed Analyzed - Analysis Complete

Buffer Over-Read in Microsoft Office

Publication date: 2026-09-08

Last updated on: 2026-09-09

Assigner: Microsoft Corporation

Description

Buffer over-read in Microsoft Office allows an unauthorized attacker to disclose information over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-09

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-69626

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	365_apps	*
microsoft	365_apps	*
microsoft	office_2019	*
microsoft	office_2019	*
microsoft	office_2016	*
microsoft	office_2016	*
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-126	The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

Attack-Flow Graph

Executive Summary

This is a buffer over-read vulnerability in Microsoft Office. It allows an unauthorized attacker to read beyond the intended memory buffer, potentially accessing sensitive information stored in memory. The attacker can exploit this remotely over a network without needing authentication.

Impact Analysis

An attacker could exploit this to steal sensitive data such as documents, passwords, or other confidential information that may be temporarily stored in memory while using Microsoft Office. This could lead to data breaches or unauthorized access to personal or corporate information.

Compliance Impact

This vulnerability could lead to unauthorized disclosure of personal or sensitive data, which may violate compliance requirements under GDPR, HIPAA, or other regulations. Organizations using affected Microsoft Office versions may face legal penalties, reputational damage, and increased scrutiny for failing to protect sensitive information.

Mitigation Strategies

Apply the latest security updates from Microsoft for affected Office products immediately. Monitor Microsoft's official update guide for patches and install them as soon as available.

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