CVE-2025-9661: OS command injection vulneravility in the management gui (maintenance utility) of Hitachi Virtual Storage Plat

This month

HIGH 8.1REMOTEDOWNGRADE

CVE-2025-9661 is a high-severity flaw (CVSS 8.1) affecting virtual storage one block. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OS command injection vulneravility in the management gui (maintenance utility) of Hitachi Virtual Storage Platform One Block 23, 24, 26 and 28. This issue affects Hitachi Virtual Storage Platform One Block 23/24/26/28: before DKCMAIN A3-04-21-40/00, ESM A3-04-21/00.

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-05-07
Last modified	2026-10-14

Publisher (CNA): Hitachi, Ltd. · Vendor: hitachi

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-07 08:16 UTCPublished CVE record published
2026-10-14 13:10 UTCUpdated Record last modified

hitachi virtual storage one block DOWNGRADE

Affected: 23 · 24 · 26 · 28

Fixed in: no fixed release known

Safe to downgrade to: a release before 23

1. Check installed version

apt-cache policy virtual-storage-one-block || rpm -q virtual-storage-one-block || virtual-storage-one-block --version

2. No fixed release: DOWNGRADE to a release before 23 (Debian / Ubuntu)

apt-cache madison virtual-storage-one-block sudo apt install virtual-storage-one-block=<VERSION_BEFORE_23> sudo apt-mark hold virtual-storage-one-block

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list virtual-storage-one-block sudo dnf downgrade virtual-storage-one-block-<VERSION_BEFORE_23> sudo dnf versionlock add virtual-storage-one-block

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-9661?

virtual storage one block: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-9661 being exploited?

CVE-2025-9661 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-9661 affect?

CVE-2025-9661 affects virtual storage one block. Severity is high (CVSS 8.1). OS command injection vulneravility in the management gui (maintenance utility) of Hitachi Virtual Storage Platform One Block 23, 24, 26 and 28. This issue affects Hitachi Virtual Storage Platform One Block 23/24/26/28: before DKCMAIN A3-04

How urgent is CVE-2025-9661?

Priority 48/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-1978 HIGH 8.3 DOWNGRADE MITIGATE Remote Code Execution Vulnerability in Hitachi Storage Navigator and the maintenance console in Hitachi Virtua

References

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