CVE-2025-9661Network attack vector

Unauthenticated command execution via maintenance GUI

Published May 7, 2026 · Updated May 7, 2026

OS command injection in Hitachi VSP One Block 23, 24, 26, and 28 maintenance GUIs allows remote attackers to execute commands. Hitachi has not disclosed the affected request parameter or function, or how the GUI passes untrusted input to an operating-system command. Network access without authentication is sufficient; Hitachi has not described the additional conditions required for exploitation or the command privileges obtained.

CVSS severity8.1
High
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Hitachi VSP One Block 23, 24, 26, and 28 maintenance GUIs allows remote attackers to execute commands. Hitachi has not disclosed the affected request parameter or function, or how the GUI passes untrusted input to an operating-system command. Network access without authentication is sufficient; Hitachi has not described the additional conditions required for exploitation or the command privileges obtained.

The record

CVE
CVE-2025-9661
Published
May 7, 2026
Updated
May 7, 2026
Vendor
Hitachi Vantara
Product
Hitachi Virtual Storage Platform One Block 23
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 7, 2026CVE publishedPublication date reported by the CVE source.
  2. May 7, 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=0 <DKCMAIN A3-04-21-40/00, ESM A3-04-21/00 changes=[{"at":"DKCMAIN A3-04-21-40/00, ESM A3-04-21/00","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hitachi Vantara · Hitachi Virtual Storage Platform One Block 23version=0 <DKCMAIN A3-04-21-40/00, ESM A3-04-21/00 changes=[{"at":"DKCMAIN A3-04-21-40/00, ESM A3-04-21/00","status":"unaffected"}]
Hitachi Vantara · Hitachi Virtual Storage Platform One Block 28version=0 <DKCMAIN A3-04-21-40/00, ESM A3-04-21/00 changes=[{"at":"DKCMAIN A3-04-21-40/00, ESM A3-04-21/00","status":"unaffected"}]
Hitachi Vantara · Hitachi Virtual Storage Platform One Block 24version=0 <DKCMAIN A3-04-21-40/00, ESM A3-04-21/00 changes=[{"at":"DKCMAIN A3-04-21-40/00, ESM A3-04-21/00","status":"unaffected"}]
Hitachi Vantara · Hitachi Virtual Storage Platform One Block 26version=0 <DKCMAIN A3-04-21-40/00, ESM A3-04-21/00 changes=[{"at":"DKCMAIN A3-04-21-40/00, ESM A3-04-21/00","status":"unaffected"}]

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1Hitachi, Ltd.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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