CVE-2026-17073

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IBM i Missing Subtree Checks Information Disclosure

Publication date: 2026-10-16

Last updated on: 2026-10-16

Assigner: IBM Corporation

Description

IBM i 7.3, 7.4, 7.5, and 7.6 could allow a local attacker to obtain sensitive information due to missing subtree checks during file handle resolution.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-16

Last Modified

2026-10-16

Generated

2026-10-17

AI Q&A

2026-10-17

EPSS Evaluated

N/A

NVD

CVE-2026-17073

EUVD

EUVD-2026-103140

Affected Vendors & Products

Vendor	Product	Version / Range
IBM	i	7.6
IBM	i	7.5
IBM	i	7.4
IBM	i	7.3

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

IBM i versions 7.3 through 7.6 have a flaw where a local attacker could access sensitive information. This happens because the system fails to properly check file paths during file handle resolution, potentially allowing unauthorized access to restricted data.

Impact Analysis

If exploited, this vulnerability could let an attacker read or modify sensitive files they should not have access to. This might include confidential business data, user credentials, or other protected information stored on the system.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating compliance requirements like GDPR or HIPAA. Organizations may face penalties if sensitive personal or health data is compromised due to insufficient access controls.

Mitigation Strategies

Apply IBM i PTFs or updates provided by IBM to address the missing subtree checks during file handle resolution. Monitor IBM security bulletins for patches and install them promptly.

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