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CVE-2026-86574

Heap-based Buffer Overflow Vulnerability in JP1/Base

9.8 Critical

CVE-2026-86574 is a critical vulnerability (CVSS 9.8) in Hitachi Jp1/base, published October 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. No source names a fixed version.

What does this mean?
Severity
9.8 CriticalCVSS 3.1, CVE List
Exploit chance
0.52%EPSS, 44th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

Heap-based Buffer Overflow Vulnerability in JP1/Base.

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

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.52%Unchanged since Oct 27, 2026
90%50%10%1%

Affected products

What each source reports

CVE List Score used9.8

Heap-based Buffer Overflow Vulnerability in JP1/Base

Heap-based Buffer Overflow Vulnerability in JP1/Base.

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

Record
CVE-2026-86574
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-122
Updated
2026-11-04
EUVDEUVD-2026-1106509.8

Heap-based Buffer Overflow Vulnerability in JP1/Base.

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

Record
EUVD-2026-110650
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-04
GitHub AdvisoriesGHSA-g8rj-6x73-6prx9.8

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

Heap-based Buffer Overflow Vulnerability in JP1/Base.

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

Record
GHSA-g8rj-6x73-6prx
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-122
Updated
2026-11-02
NVD9.8

Heap-based Buffer Overflow Vulnerability in JP1/Base.

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

Record
CVE-2026-86574
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-122
Updated
2026-11-04

History

History
RecordedChangedSources
factsCVE List
first indexedCVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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