CVE-2026-86573

Unspecified impact from privileged local access

Published Oct 14, 2026 · Updated Oct 14, 2026

Out-of-bounds writes in Hitachi Disk Array Driver for AIX allow local users with administrative privileges to cause unspecified impact. Hitachi's published record also identifies Hitachi Disk Array Driver for Virtual I/O Server but does not disclose the affected function, triggering input, or incorrect write operation. Exploitation requires privileged local access; the precise consequence, including whether interruption causes a hang, crash, or reboot, is not disclosed.

CVSS severity5.1
Medium
EPSS probability0.13%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds writes in Hitachi Disk Array Driver for AIX allow local users with administrative privileges to cause unspecified impact. Hitachi's published record also identifies Hitachi Disk Array Driver for Virtual I/O Server but does not disclose the affected function, triggering input, or incorrect write operation. Exploitation requires privileged local access; the precise consequence, including whether interruption causes a hang, crash, or reboot, is not disclosed.

The record

CVE
CVE-2026-86573
Published
Oct 14, 2026
Updated
Oct 14, 2026
Vendor
Hitachi
Product
Hitachi Disk Array Driver for AIX
Classifications
CWE-787, CAPEC-100
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=01-00 <01-23-/A changes=[{"at":"01-23-/A","status":"unaffected"}]

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Hitachi · Hitachi Disk Array Driver for AIXversion=01-00 <01-23-/A changes=[{"at":"01-23-/A","status":"unaffected"}]
Hitachi · Hitachi Disk Array Driver for Virtual I/O Serverversion=01-04 <01-23-/A changes=[{"at":"01-23-/A","status":"unaffected"}]

Published CVSS scores

5.1HitachiCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CAPEC-100Overflow Buffers

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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