CVE-2026-86574— Heap-based Buffer Overflow Vulnerability in JP1/Base

Quick assessment

Affected

Hitachi JP1/Base

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

JP1/Base 中存在基于堆的缓冲区溢出漏洞。该问题影响 JP1/Base 版本：从 11-00 起，至 12-50-54 之前（即 12-50-54 之前的所有版本）。

CVSS 9.8 · Critical Updated Oct 27, 2026

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

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Vulnerability Information

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Vulnerability Title

Heap-based Buffer Overflow Vulnerability in JP1/Base

Source: CVE Program / CVE List V5

Vulnerability Description

Heap-based Buffer Overflow Vulnerability in JP1/Base. This issue affects JP1/Base: from 11-00 before 12-50-54.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

堆缓冲区溢出

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Hitachi	JP1/Base	11-00 ~ 12-50-54	-

II. Public POCs for CVE-2026-86574

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-86574

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Other References for CVE-2026-86574 (1)

https://www.hitachi.com/products/it/software/security/info/vuls/hitachi-sec-2026-156/index.html vendor-advisory

https://www.cve.org/CVERecord?id=CVE-2026-86574

Same Patch Batch · Hitachi · 2026-10-27 · 19 CVEs total

CVE-2026-76939	9.8 CRITICAL	Heap-based Buffer Overflow Vulnerability in JP1/Automatic Job Management System 3
CVE-2026-82120	9.8 CRITICAL	Heap-based Buffer Overflow Vulnerability in HiRDB
CVE-2026-82119	9.8 CRITICAL	OS Command Injection Vulnerability in HiRDB
CVE-2026-82118	9.8 CRITICAL	Stack-based Buffer Overflow Vulnerability in HiRDB
CVE-2026-82117	9.8 CRITICAL	Authentication Bypass by Spoofing Vulnerability in HiRDB
CVE-2026-82116	9.8 CRITICAL	Missing Authentication for Critical Function Vulnerability in HiRDB
CVE-2026-76934	9.8 CRITICAL	Stack-based Buffer Overflow Vulnerability in JP1/Automatic Job Management System 3
CVE-2026-76938	9.8 CRITICAL	Authentication Bypass Vulnerability in JP1/Automatic Job Management System 3
CVE-2026-76933	9.4 CRITICAL	Heap-based Buffer Overflow Vulnerability in JP1/Automatic Job Management System 3
CVE-2026-76935	9.4 CRITICAL	Stack-based Buffer Overflow Vulnerability in JP1/Automatic Job Management System 3
CVE-2026-76932	9.4 CRITICAL	Stack-based Buffer Overflow Vulnerability in JP1/Automatic Job Management System 3
CVE-2026-82122	9.4 CRITICAL	Stack-based Buffer Overflow Vulnerability in HiRDB
CVE-2026-76937	9.4 CRITICAL	Heap-based Buffer Overflow Vulnerability in JP1/Automatic Job Management System 3
CVE-2026-76936	9.4 CRITICAL	Stack-based Buffer Overflow Vulnerability in JP1/Automatic Job Management System 3
CVE-2026-86577	9.4 CRITICAL	Out-of-bounds Write Vulnerability in JP1 Products
CVE-2026-86576	9.4 CRITICAL	Heap-based Buffer Overflow Vulnerability in JP1 Products
CVE-2026-86575	9.4 CRITICAL	Stack-based Buffer Overflow Vulnerability in JP1 Products
CVE-2026-82121	7.5 HIGH	Origin Validation Error Vulnerability in HiRDB

IV. Related Vulnerabilities

Same vendor: Hitachi

Same weakness: CWE-122