Oracle ZFS Storage Appliance Kit 8.8 Fileystems improper authorization

CVSS Meta Temp Score
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CTI Interest Score
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3.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Oracle ZFS Storage Appliance Kit 8.8. Impacted is an unknown function of the component Fileystems. Performing a manipulation results in improper authorization. This vulnerability is known as CVE-2026-21930. Attacking locally is a requirement. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Oracle ZFS Storage Appliance Kit 8.8. It has been classified as critical. This affects an unknown functionality of the component Fileystems. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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).

The advisory is shared at oracle.com. This vulnerability is uniquely identified as CVE-2026-21930 since 01/05/2026. The exploitability is told to be easy. An attack has to be approached locally. The exploitation requires an enhanced level of successful authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at EUVD (EUVD-2026-3579) and CERT Bund (WID-SEC-2026-0174). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Oracle Systems

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 2.3
CNA Vector (oracle): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authorization
CWE: CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/05/2026 CVE reserved
01/20/2026 +15 days Advisory disclosed
01/20/2026 +0 days VulDB entry created
01/21/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: oracle.com

Advisory: oracle.com
Status: Confirmed

CVE: CVE-2026-21930 (🔒)
GCVE (CVE): GCVE-0-2026-21930
GCVE (VulDB): GCVE-100-342105
EUVD: 🔒
CERT Bund: WID-SEC-2026-0174 - Oracle Systems: Mehrere Schwachstellen

Entryinfo

Created: 01/20/2026 23:54
Updated: 01/21/2026 13:15
Changes: 01/20/2026 23:54 (63), 01/21/2026 10:21 (7), 01/21/2026 13:15 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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