High severity · published Oct 20, 2026
CVE-2026-91527
Vulnerability in the Oracle ZFS Storage Appliance Kit product of Oracle Systems (component: Core)
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
Vulnerability in the Oracle ZFS Storage Appliance Kit product of Oracle Systems (component: Core). The supported version that is affected is 8.8. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle ZFS Storage Appliance Kit. Successful attacks of this vulnerability can result in takeover of Oracle ZFS Storage Appliance Kit. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OZ
Oracle ZFS Storage Appliance Kit · Oracle Corporation
8.8 · source: vendor
Affected product
OZ
Oracle ZFS Storage Appliance Kit
Oracle Corporation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91527
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91527
www.oracle.com
https://www.oracle.com/security-alerts/cpuoct2026.html
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