---
id: CVE-2026-86573
title: >-
  Out-of-bounds write vulnerability in Hitachi Disk Array Driver for AIX and
  Hitachi Disk Array Driver for Virtual I/O Server.


  This issue affects Hitachi Disk Array Driver for AIX: from 01-00 before
  01-23-/A; Hitachi Disk Array Driver for…
summary: >-
  Out-of-bounds write vulnerability in Hitachi Disk Array Driver for AIX and
  Hitachi Disk Array Driver for Virtual I/O Server.


  This issue affects Hitachi Disk Array Driver for AIX: from 01-00 before
  01-23-/A; Hitachi Disk Array Driver for…
severity: medium
cvss: 5.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H'
cwe:
  - CWE-787
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T02:17:01.147'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86573'
references:
  - url: >-
      https://www.hitachi.com/products/it/software/security/info/vuls/hitachi-sec-2026-137/index.html
    label: hirt@hitachi.co.jp
tags:
  - nvd
ingestedAt: '2026-10-14T03:11:15.440Z'
---

## Overview

Out-of-bounds write vulnerability in Hitachi Disk Array Driver for AIX and Hitachi Disk Array Driver for Virtual I/O Server.

This issue affects Hitachi Disk Array Driver for AIX: from 01-00 before 01-23-/A; Hitachi Disk Array Driver for Virtual I/O Server: from 01-04 before 01-23-/A.

## Remediation

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