CVE-2026-2311
Received Received - Intake
IBM i Web Administration Privilege Escalation Vulnerability

Publication date: 2026-04-30

Last updated on: 2026-05-01

Assigner: IBM Corporation

Description
IBM i 7.6, 7.5, 7.4, 7.3, and 7.2 s vulnerable to privilege escalation caused by an invalid IBM i Web Administration GUI authorization check.  A malicious actor could cause user-controlled code to run with administrator privilege.
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Meta Information
Published
2026-04-30
Last Modified
2026-05-01
Generated
2026-06-16
AI Q&A
2026-05-01
EPSS Evaluated
2026-06-15
NVD
CVE-2026-2311
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
ibm i 7.2
ibm i 7.3
ibm i 7.4
ibm i 7.5
ibm i 7.6
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
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Executive Summary

This vulnerability affects IBM i versions 7.6, 7.5, 7.4, 7.3, and 7.2. It is caused by an invalid authorization check in the IBM i Web Administration GUI, which allows a malicious actor to escalate privileges.

Specifically, an attacker could exploit this flaw to run user-controlled code with administrator privileges.

Impact Analysis

The vulnerability can lead to privilege escalation, meaning an attacker could gain administrator-level access on the affected IBM i system.

With administrator privileges, the attacker could execute arbitrary code, potentially compromising system integrity, confidentiality, and availability.

Mitigation Strategies

To mitigate the CVE-2026-2311 vulnerability in IBM i Web Administration GUI, users should apply the relevant Program Temporary Fixes (PTFs) released by IBM for their specific IBM i versions (7.2 through 7.6).

There are no available workarounds currently, so applying the official fixes is critical.

Additionally, IBM recommends upgrading to supported versions if you are running unsupported software.

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