---
id: CVE-2026-18869
title: >-
  IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to
  bypass security restrictions and access internal network services due to
  improper validation of FTP PORT and EPRT commands.
summary: >-
  IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to
  bypass security restrictions and access internal network services due to
  improper validation of FTP PORT and EPRT commands.
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-918
vendor: IBM
product: i
affected:
  - i 7.6
  - i 7.5
  - i 7.4
  - i 7.3
published: '2026-09-18'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T19:32:25.730'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18869'
references:
  - url: 'https://www.ibm.com/support/pages/node/7287873'
    label: psirt@us.ibm.com
tags:
  - nvd
  - cve.org
epss: 0.00222
epssPercentile: 0.11461
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-18T19:44:35.555825Z'
ingestedAt: '2026-09-18T19:49:30.585Z'
---

## Overview

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions and access internal network services due to improper validation of FTP PORT and EPRT commands.

## Remediation

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