---
id: CVE-2026-86574
title: Heap-based Buffer Overflow Vulnerability in JP1/Base
summary: |-
  Heap-based Buffer Overflow Vulnerability in JP1/Base.

  This issue affects JP1/Base: from 11-00 before 12-50-54.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-122
vendor: Hitachi
product: JP1/Base
affected:
  - JP1/Base >= 11-00 < 12-50-54
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-11-04T14:55:05.627700Z'
published: '2026-10-27'
updated: '2026-11-04'
sourceUpdated: '2026-11-04T14:58:03.975Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-86574'
references:
  - url: >-
      https://www.hitachi.com/products/it/software/security/info/vuls/hitachi-sec-2026-156/index.html
tags:
  - cve.org
epss: 0.00519
epssPercentile: 0.44251
ingestedAt: '2026-10-27T16:11:59.258Z'
---

## Overview

Heap-based Buffer Overflow Vulnerability in JP1/Base.

This issue affects JP1/Base: from 11-00 before 12-50-54.

## Affected

- `JP1/Base >= 11-00 < 12-50-54`

## Remediation

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