CVE-2026-17068

Analyzed Analyzed - Analysis Complete

IBM i NFS Version Restriction Bypass Vulnerability

Publication date: 2026-10-16

Last updated on: 2026-10-23

Assigner: IBM Corporation

Description

IBM i 7.3, 7.4, 7.5, and 7.6 could allow a local attacker to bypass NFS version restrictions due to improper enforcement of the export version flag.

CVSS Scores

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Meta Information

Published

2026-10-16

Last Modified

2026-10-23

Generated

2026-11-08

AI Q&A

2026-10-17

EPSS Evaluated

2026-11-07

NVD

CVE-2026-17068

EUVD

EUVD-2026-103141

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-285	The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

IBM i versions 7.3 to 7.6 have a flaw where a local attacker can bypass NFS version restrictions. This happens because the system improperly enforces the export version flag, allowing unauthorized access to NFS exports.

Detection Guidance

This vulnerability involves improper enforcement of NFS version restrictions in IBM i systems. Detection requires checking NFS export configurations and version settings on IBM i systems. Use IBM i commands like DSPNFSEXP to review NFS exports and their version restrictions. Verify if the export version flag is properly enforced for all configured exports.

Impact Analysis

An attacker could exploit this to gain unauthorized access to NFS exports, potentially leading to data leakage or unauthorized modifications. The impact is limited to local attackers with access to the system.

Compliance Impact

This vulnerability could lead to unauthorized data access, which may violate compliance requirements for data protection like GDPR or HIPAA. Organizations must address it to maintain regulatory compliance.

Mitigation Strategies

Apply IBM i PTFs or updates to address improper NFS export version flag enforcement. Review and restrict NFS export configurations to ensure version restrictions are properly enforced.

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