How severe is CVE-2023-6538?

CVE-2023-6538 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2023-6538 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6538?

CVE-2023-6538 affects Hitachi System Management Unit Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-6538?

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.

When was CVE-2023-6538 published?

CVE-2023-6538 was published on 2023-12-11 and last updated on 2026-06-17.

CVE-2023-6538

CVE-2023-6538 is a high-severity vulnerability in Hitachi System Management Unit Firmware with a CVSS 3.x base score of 7.6. 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-285.

Key facts

Severity: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-285
Affected product: Hitachi System Management Unit Firmware
Published: 2023-12-11
Last modified: 2026-06-17

Description

SMU versions prior to 14.8.7825.01 are susceptible to unintended information disclosure, through URL manipulation. Authenticated users in Storage, Server or combined Server+Storage administrative roles are able to access SMU configuration backup, that would normally be barred to those specific administrative roles.

Frequently asked questions

What is CVE-2023-6538?: SMU versions prior to 14.8.7825.01 are susceptible to unintended information disclosure, through URL manipulation. Authenticated users in Storage, Server or combined Server+Storage administrative roles are able to access SMU configuration backup, that would normally be barred to those specific administrative roles.
How severe is CVE-2023-6538?: CVE-2023-6538 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2023-6538 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6538?: CVE-2023-6538 affects Hitachi System Management Unit Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-6538?: 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.
When was CVE-2023-6538 published?: CVE-2023-6538 was published on 2023-12-11 and last updated on 2026-06-17.

References

https://knowledge.hitachivantara.com/Security/System_Management_Unit_(SMU)_versions_prior_to_14.8.7825.01%2C_used_to_manage_Hitachi_Vantara_NAS_products_is_susceptible_to_unintended_information_disclosure_via_unprivileged_access_to_SMU_configuration_backup_data.

Affected products (1)

cpe:2.3:o:hitachi:system_management_unit_firmware:*:*:*:*:*:*:*:*

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