CVE-2026-88210

Analyzed Analyzed - Analysis Complete

Security Feature Bypass in Microsoft Office Word

Publication date: 2026-10-13

Last updated on: 2026-10-15

Assigner: Microsoft Corporation

Description

Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature 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-2026-88210

EUVD

EUVD-2026-100189

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	365_apps	*
microsoft	365_apps	*
microsoft	microsoft_365	*
microsoft	office_2021	*
microsoft	office_2024	*
microsoft	office_2024	*
microsoft	office_2024	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-807	The product uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism.

Attack-Flow Graph

Executive Summary

This vulnerability involves Microsoft Office Word relying on untrusted inputs when making security decisions. An unauthorized attacker can exploit this to bypass a security feature locally.

Impact Analysis

An attacker could bypass security features in Microsoft Office Word, potentially gaining unauthorized access to sensitive data or executing malicious actions on your system.

Compliance Impact

This vulnerability allows unauthorized local bypass of security features in Microsoft Office Word, which could lead to unauthorized access or modification of sensitive data. This may impact compliance with GDPR by increasing risks of data breaches and unauthorized processing, and with HIPAA by potentially exposing protected health information.

Mitigation Strategies

Apply the latest security updates from Microsoft for Office products as soon as they become available to address the security feature bypass issue.

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