CVE-2026-70316

Analyzed Analyzed - Analysis Complete

Improper Input Validation in Microsoft Office PowerPoint

Publication date: 2026-08-11

Last updated on: 2026-08-14

Assigner: Microsoft Corporation

Description

Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-11

Last Modified

2026-08-14

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-30

NVD

CVE-2026-70316

EUVD

EUVD-2026-56571

Affected Vendors & Products

Vendor	Product	Version / Range
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	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Executive Summary

This vulnerability is an improper input validation flaw in Microsoft Office PowerPoint. It allows an unauthorized attacker to disclose information locally by exploiting how PowerPoint processes certain inputs.

Detection Guidance

This vulnerability involves improper input validation in Microsoft Office PowerPoint leading to local information disclosure. Detection may require monitoring PowerPoint files for suspicious inputs or unusual behavior during file processing. Check for updates from Microsoft to patch this issue.

Impact Analysis

An attacker could exploit this to access sensitive information stored on your local system through PowerPoint files. This may include documents, data, or other confidential material if you open a maliciously crafted file.

Compliance Impact

This vulnerability allows local information disclosure due to improper input validation in Microsoft Office PowerPoint. While not directly tied to GDPR or HIPAA, such vulnerabilities could potentially lead to unauthorized access to sensitive data, which may impact compliance if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft for Office PowerPoint as soon as they become available to address the improper input validation issue.

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