---
id: CVE-2026-17262
title: >-
  IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to cause a denial of
  service due to improper validation of FTP authentication commands.
summary: >-
  IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to cause a denial of
  service due to improper validation of FTP authentication commands.
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L'
cwe:
  - CWE-78
vendor: IBM
product: i
affected:
  - i 7.6
  - i 7.5
  - i 7.4
  - i 7.3
published: '2026-09-18'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T04:17:41.683'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-17262'
references:
  - url: 'https://www.ibm.com/support/pages/node/7287873'
    label: psirt@us.ibm.com
tags:
  - nvd
  - cve.org
epss: 0.00194
epssPercentile: 0.09399
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T13:17:54.882101Z'
ingestedAt: '2026-09-18T19:49:30.595Z'
---

## Overview

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to cause a denial of service due to improper validation of FTP authentication commands.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.