---
id: CVE-2026-93744
title: IBM i Improper Authentication
summary: >-
  IBM i 7.3, 7.4, 7.5, and 7.6 could allow an unathenticated remote attacker to
  bypass security restrictions due to improper access control. By sending a
  specially crafted HTTP request to any URL within the Navigator application
  prior to a…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-287
vendor: IBM
product: i
affected:
  - i 7.6
  - i 7.5
  - i 7.4
  - i 7.3
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T21:41:32.677Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-93744'
references:
  - url: 'https://www.ibm.com/support/pages/node/7292223'
tags:
  - cve.org
ingestedAt: '2026-10-20T22:23:33.693Z'
---

## Overview

IBM i 7.3, 7.4, 7.5, and 7.6 could allow an unathenticated remote attacker to bypass security restrictions due to improper access control. By sending a specially crafted HTTP request to any URL within the Navigator application prior to authentication, a bad actor could exploit this vulnerability to alter server-side session security state.

## Affected

- `i 7.6`
- `i 7.5`
- `i 7.4`
- `i 7.3`

## Remediation

IBM i Release5770-SS1 Option 3 
PTF Number(s)PTF Download Link(s)7.6SJ11740 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11740 7.5SJ11745 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11745 7.4SJ11746 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11746 7.3SJ11747 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11747 



IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.