CVE-2026-16856
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IBM i OS Command Injection Vulnerability

Publication date: 2026-08-12

Last updated on: 2026-08-12

Assigner: IBM Corporation

Description
IBM i 7.6, and 7.5 could allow a local attacker to gain elevated privileges due to improper neutralization of special elements used in an OS command.

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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-2026-16856
EUVD
EUVD-2026-57377

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
ibm ibm_i to 7.6 (inc)
ibm ibm_i to 7.5 (inc)

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

CVE-2026-16856 is a vulnerability in IBM i 7.6 and 7.5 where a local attacker could gain elevated privileges by exploiting improper neutralization of special elements in an OS command. This is an OS command injection vulnerability classified under CWE-78.

Impact Analysis

A local attacker could exploit this to gain elevated privileges on the system, potentially allowing unauthorized access to sensitive data or system functions. The high CVSS score of 8.8 indicates significant risk.

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