---
id: CVE-2026-17488
title: IBM i is Affected By An Improper Authentication Vulnerability in SST / DST
summary: >-
  IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to
  bypass security restrictions due to improper authentication.
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T18:39:08.562Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-17488'
references:
  - url: 'https://www.ibm.com/support/pages/node/7292270'
tags:
  - cve.org
ingestedAt: '2026-10-16T19:46:24.440Z'
---

## Overview

IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to bypass security restrictions due to improper authentication.

## Affected

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

## Remediation

IBM i Release5770-999 
PTF Number(s)PTF Download Link(s)7.6MJ11751 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11751 7.5MJ11749 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11749 7.4MJ11750 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11750 7.3MJ11748 https://www.ibm.com/mysupport/s/fix-information?legacy=MJ11748 



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