CVE-2026-18235
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Remote Command Execution in IBM i

Publication date: 2026-08-12

Last updated on: 2026-08-12

Assigner: IBM Corporation

Description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to execute arbitrary Control Language commands due to insufficient input validation.

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Meta Information

Published
2026-08-12
Last Modified
2026-08-12
Generated
2026-08-13
AI Q&A
2026-08-12
EPSS Evaluated
N/A
NVD
CVE-2026-18235
EUVD
EUVD-2026-57363

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.

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Executive Summary

This vulnerability allows a remote authenticated attacker to execute arbitrary Control Language commands on IBM i systems due to insufficient input validation. It affects IBM i versions 7.6, 7.5, 7.4, and 7.3.

Impact Analysis

An attacker could gain unauthorized access to execute commands, potentially leading to data breaches, system compromise, or unauthorized modifications. The impact severity is high due to the combination of confidentiality, integrity, and availability risks.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR, HIPAA, and other regulations by enabling unauthorized data access or modification. Organizations may face penalties for failing to protect sensitive data adequately.

Mitigation Strategies

Apply IBM i PTFs or updates to address insufficient input validation. Restrict remote authenticated user access to only necessary commands. Monitor for unusual Control Language command execution patterns.

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