How severe is CVE-2026-21930?

CVE-2026-21930 has a CVSS 3.x base score of 2.3, rated low severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-21930 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-21930?

CVE-2026-21930 affects Oracle Sun Zfs Storage Appliance Kit. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-21930?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-21930 have an EU (EUVD) identifier?

Yes. CVE-2026-21930 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3579.

When was CVE-2026-21930 published?

CVE-2026-21930 was published on 2026-01-20 and last updated on 2026-06-17.

CVE-2026-21930

CVE-2026-21930 is a low-severity vulnerability in Oracle Sun Zfs Storage Appliance Kit with a CVSS 3.x base score of 2.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 3.x base score 2.3)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3579
Affected product: Oracle Sun Zfs Storage Appliance Kit
Published: 2026-01-20
Last modified: 2026-06-17

Description

Vulnerability in the Oracle ZFS Storage Appliance Kit product of Oracle Systems (component: Filesystems). The supported version that is affected is 8.8. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle ZFS Storage Appliance Kit executes to compromise Oracle ZFS Storage Appliance Kit. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle ZFS Storage Appliance Kit accessible data. CVSS 3.1 Base Score 2.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N).

Frequently asked questions

What is CVE-2026-21930?: Vulnerability in the Oracle ZFS Storage Appliance Kit product of Oracle Systems (component: Filesystems). The supported version that is affected is 8.8. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle ZFS Storage Appliance Kit executes to compromise Oracle ZFS Storage Appliance Kit. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle ZFS Storage Appliance Kit accessible data. CVSS 3.1 Base Score 2.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N).
How severe is CVE-2026-21930?: CVE-2026-21930 has a CVSS 3.x base score of 2.3, rated low severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-21930 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-21930?: CVE-2026-21930 affects Oracle Sun Zfs Storage Appliance Kit. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-21930?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-21930 have an EU (EUVD) identifier?: Yes. CVE-2026-21930 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3579.
When was CVE-2026-21930 published?: CVE-2026-21930 was published on 2026-01-20 and last updated on 2026-06-17.

References

https://www.oracle.com/security-alerts/cpujan2026.html

Affected products (1)

cpe:2.3:a:oracle:sun_zfs_storage_appliance_kit:8.8.0:*:*:*:*:*:*:*

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