Threat database

CVE-2026-21930 is a low-severity vulnerability affecting Oracle ZFS Storage Appliance Kit version 8.8. It allows a high-privileged attacker with existing logon access to the infrastructure hosting the appliance to perform unauthorized update, insert, or delete operations on accessible data. The vulnerability impacts data integrity but does not affect confidentiality or availability. Exploitation requires local access with high privileges and no user interaction. There are no known exploits in the wild, and no patches have been linked yet. European organizations using Oracle ZFS Storage Appliance Kit 8.8 should assess their exposure and restrict high-privileged access to mitigate risk. The vulnerability is unlikely to cause widespread disruption but could compromise data integrity in targeted attacks. Countries with significant Oracle infrastructure deployments and critical data storage needs are more likely to be affected.

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 network access via HTTP to compromise Oracle ZFS Storage Appliance Kit. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle ZFS Storage Appliance Kit. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).