CVE-2026-2311: IBM i is affected by a privilege escalation vulnerability in Web Administration GUI []

Published Apr 15, 2026
·
Updated

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.

Other sources

IBM i is 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.

— IBM

Affected Software

11 affected components
IBM IBM i=7.6, =7.5, =7.4, =7.3, =7.2
IBM i<=7.6
IBM i<=7.5
IBM i<=7.4
IBM i<=7.3
IBM i<=7.2
IBM i=7.2
IBM i=7.3
IBM i=7.4
IBM i=7.5
IBM i=7.6

Remediation

Information

IBM strongly recommends addressing the vulnerability now. IBM i Release5770-DG1 PTF Number(s)PTF Download Link(s)7.6SJ08417 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ08417 7.5SJ08418 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ08418 7.4SJ08419 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ08419 7.3SJ08604 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ08604 7.2SJ08818 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ08818 IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.

Event History

Apr 15, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Apr 30, 2026
CVE Published
via MITRE·09:45 PM
Data Sourced
via MITRE·09:45 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·10:16 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2026-2311?

CVE-2026-2311 is classified as a privilege escalation vulnerability affecting IBM i versions 7.2 to 7.6.

2

How do I fix CVE-2026-2311?

To fix CVE-2026-2311, apply the latest security patches provided by IBM for your version of IBM i.

3

What systems are affected by CVE-2026-2311?

CVE-2026-2311 affects IBM i versions 7.2, 7.3, 7.4, 7.5, and 7.6.

4

What can an attacker do with CVE-2026-2311?

An attacker exploiting CVE-2026-2311 could execute user-controlled code with administrative privileges.

5

Is there a workaround for CVE-2026-2311?

Currently, there are no recommended workarounds for CVE-2026-2311; applying patches is the advised approach.

Company

Resources

Contact

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