---
id: CVE-2026-81858
title: "IBM i 7.3, 7.4, 7.5, and 7.6\_could allow a remote authenticated attacker to cause a denial of service and obtain information due to an out-of-bounds read in the File Server."
summary: "IBM i 7.3, 7.4, 7.5, and 7.6\_could allow a remote authenticated attacker to cause a denial of service and obtain information due to an out-of-bounds read in the File Server."
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L'
cwe:
  - CWE-125
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T00:17:01.807'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81858'
references:
  - url: 'https://www.ibm.com/support/pages/node/7290195'
    label: psirt@us.ibm.com
tags:
  - nvd
ingestedAt: '2026-10-13T01:10:59.044Z'
---

## Overview

IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to cause a denial of service and obtain information due to an out-of-bounds read in the File Server.

## Remediation

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