CVE-2026-70298

Analyzed Analyzed - Analysis Complete

Path Traversal in Microsoft Office SharePoint

Publication date: 2026-10-13

Last updated on: 2026-10-14

Assigner: Microsoft Corporation

Description

Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-13

Last Modified

2026-10-14

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-70298

EUVD

EUVD-2026-99722

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	sharepoint_server	to 16.0.20326.20190 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-22	The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Attack-Flow Graph

Executive Summary

This is a path traversal vulnerability in Microsoft Office SharePoint. It allows an authorized attacker to access restricted files or directories outside the intended path by manipulating file paths in requests. This can lead to unauthorized information disclosure over a network.

Impact Analysis

An attacker could exploit this to read sensitive files on the SharePoint server, including confidential documents, configuration files, or other restricted data. This may result in data breaches, loss of intellectual property, or compliance violations depending on the exposed information.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR (data protection) and HIPAA (health information privacy) requirements. Organizations may face fines, legal penalties, and reputational damage if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft for SharePoint Server to address the path traversal vulnerability. Monitor Microsoft's security advisories for patches and implement network-level controls to restrict unauthorized access.

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