CVE-2026-70019

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Windows Hard Link Information Disclosure in Windows Compressed Folder

Publication date: 2026-09-08

Last updated on: 2026-09-08

Assigner: Microsoft Corporation

Description

Windows hard link in Windows Compressed Folder allows an unauthorized attacker to disclose information over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-08

Last Modified

2026-09-08

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-70019

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-65	The product, when opening a file or directory, does not sufficiently handle when the name is associated with a hard link to a target that is outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.

Attack-Flow Graph

Executive Summary

This vulnerability involves a Windows hard link in Windows Compressed Folder that allows an unauthorized attacker to disclose information over a network. It does not require authentication and can be exploited remotely.

Impact Analysis

An attacker could exploit this to access sensitive information stored in compressed folders on your system. This may lead to data leaks or unauthorized access to confidential files.

Compliance Impact

This vulnerability could result in unauthorized data disclosure, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Apply security updates from Microsoft as soon as they become available to patch the Windows Compressed Folder hard link vulnerability.

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