How severe is CVE-2025-9661?

CVE-2025-9661 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-9661 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-9661?

CVE-2025-9661 primarily affects Hitachi Virtual Storage One Block. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-9661?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-9661 have an EU (EUVD) identifier?

Yes. CVE-2025-9661 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209708.

When was CVE-2025-9661 published?

CVE-2025-9661 was published on 2026-05-07 and last updated on 2026-06-17.

CVE-2025-9661

CVE-2025-9661 is a high-severity vulnerability in Hitachi Virtual Storage One Block with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209708
Weakness: CWE-78
Affected product: Hitachi Virtual Storage One Block
Published: 2026-05-07
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-9661?: 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.
How severe is CVE-2025-9661?: CVE-2025-9661 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-9661 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-9661?: CVE-2025-9661 primarily affects Hitachi Virtual Storage One Block. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-9661?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-9661 have an EU (EUVD) identifier?: Yes. CVE-2025-9661 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209708.
When was CVE-2025-9661 published?: CVE-2025-9661 was published on 2026-05-07 and last updated on 2026-06-17.

References

https://www.hitachi.com/products/it/storage-solutions/sec_info/2026/2026_309.html

Affected products (4)

cpe:2.3:a:hitachi:virtual_storage_one_block:23:*:*:*:*:*:*:*
cpe:2.3:a:hitachi:virtual_storage_one_block:24:*:*:*:*:*:*:*
cpe:2.3:a:hitachi:virtual_storage_one_block:26:*:*:*:*:*:*:*
cpe:2.3:a:hitachi:virtual_storage_one_block:28:*:*:*:*:*:*:*

More vulnerabilities in Hitachi Virtual Storage One Block

CVE-2025-1978 — High (CVSS 8.3): Remote Code Execution Vulnerability in Hitachi Storage Navigator and the maintenance console in Hitachi Virtual Storage…
CVE-2025-2514 — Medium (CVSS 5.3): Improper restriction of excessive authentication attempts vulnerability in Hitachi Virtual Storage Platform G130, G150,…

All CVEs affecting Hitachi Virtual Storage One Block →

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-56004 — Critical (CVSS 10.0): A shellcode injection in the mercurial handler of the obs tar_scm source service before version 0.12.4 could be used by…
CVE-2026-56415 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability within the debug.pl script that is…
CVE-2026-56413 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability in the ms_service.pl service, which listens…
CVE-2026-49869 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in…
CVE-2026-49261 — Critical (CVSS 10.0): MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through…
CVE-2026-10520 — Critical (CVSS 10.0): An OS Command Injection vulnerability in Ivanti Sentry before the R10.5.2, R10.6.2 and R10.7.1 versions allows a…

Browse all CWE-78 (OS Command Injection) vulnerabilities →