CVE-2026-18073
Received Received - Intake

Command Injection in IBM i Operating System

Publication date: 2026-09-04

Last updated on: 2026-09-04

Assigner: IBM Corporation

Description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local authenticated attacker to inject parameters into a CL command due to improper neutralization of special elements.

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Meta Information

Published
2026-09-04
Last Modified
2026-09-04
Generated
2026-09-05
AI Q&A
2026-09-04
EPSS Evaluated
N/A
NVD
CVE-2026-18073
EUVD
EUVD-2026-71461

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
ibm i 7.6
ibm i 7.5
ibm i 7.4
ibm i 7.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Attack-Flow Graph

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Executive Summary

This vulnerability in IBM i versions 7.6, 7.5, 7.4, and 7.3 allows a local authenticated attacker to inject parameters into a CL command. This happens because the system does not properly neutralize special elements, which could let the attacker manipulate command execution.

Impact Analysis

An attacker could exploit this to run unauthorized commands on the system with the privileges of the authenticated user. This may lead to data access, modification, or disruption depending on the commands executed.

Mitigation Strategies

Apply IBM i PTFs or updates that address the improper neutralization of special elements in CL commands. Monitor IBM i security bulletins for patches and restrict local authenticated user access to prevent parameter injection attempts.

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