CVE-2026-70312

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:
Percentile:

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-2026-70312

EUVD

EUVD-2026-56567

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 issue in Microsoft Office PowerPoint. It allows an unauthorized attacker to disclose information locally by exploiting flaws in how PowerPoint processes input data.

Detection Guidance

This vulnerability involves improper input validation in Microsoft Office PowerPoint leading to local information disclosure. Detection may require monitoring PowerPoint file processing and validating inputs. No specific commands are provided in the available resources.

Impact Analysis

An attacker could exploit this to access sensitive information stored on your local system through PowerPoint files. This may include documents, notes, or other data processed by the application.

Compliance Impact

This vulnerability could lead to unauthorized disclosure of personal or sensitive data, potentially violating GDPR, HIPAA, or other privacy regulations. Organizations must address it to maintain compliance.

Mitigation Strategies

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

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