CVE-2026-96995

Analyzed Analyzed - Analysis Complete

Microsoft Office Word Stack-Based Buffer Overflow

Publication date: 2026-10-13

Last updated on: 2026-10-15

Assigner: Microsoft Corporation

Description

Stack-based buffer overflow in Microsoft Office Word allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-13

Last Modified

2026-10-15

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-96995

EUVD

EUVD-2026-99800

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	365_apps	*
microsoft	365_apps	*
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-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).
CWE-197	Truncation errors occur when a primitive is cast to a primitive of a smaller size and data is lost in the conversion.

Attack-Flow Graph

Executive Summary

This is a stack-based buffer overflow vulnerability in Microsoft Office Word. It allows an authorized attacker to elevate their privileges locally by exploiting a flaw in how the software handles memory.

Detection Guidance

Detection requires checking for Microsoft Office Word versions affected by the stack-based buffer overflow. Use Microsoft Update or system inventory tools to verify installed versions. No specific commands are provided in the context.

Impact Analysis

An attacker could exploit this to gain higher privileges on your system, potentially allowing them to install programs, view or delete data, or create new accounts with full user rights.

Compliance Impact

This vulnerability allows local privilege escalation in Microsoft Office Word, which could enable unauthorized access to sensitive data. This may impact compliance with GDPR (data protection) and HIPAA (healthcare data) by increasing the risk of data breaches or unauthorized modifications.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the stack-based buffer overflow in Microsoft Office Word. Monitor Microsoft's security advisories for updates and ensure all systems are updated promptly.

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