LiveActive security incident?Get immediate response
CVE Record

CVE-2021-2147: Vulnerability in the Oracle ZFS Storage Appliance Kit product of Oracle Systems (component: Installation).

Vulnerability in the Oracle ZFS Storage Appliance Kit product of Oracle Systems (component: Installation). The supported version that is affected is 8.8. Difficult to exploit 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 require human interaction from a person other than the attacker. 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 1.8 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N).

LowCVSS 1.8Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2021-2147 is a low-severity integrity issue in Oracle ZFS Storage Appliance Kit installation handling. It affects supported version 8.8. An attacker would already need high privileges, local/logon access to the relevant infrastructure, and another person’s interaction. Business urgency is limited, but affected appliances should still follow Oracle guidance.

Executive priority

Treat as routine remediation unless the affected appliance is in a sensitive environment or privileged access controls are weak. The low CVSS score and high exploitation requirements reduce urgency, but integrity impact still warrants tracking.

Technical view

The CVSS 3.1 vector is AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N, scoring 1.8. Successful exploitation may allow unauthorized update, insert, or delete access to some accessible Oracle ZFS Storage Appliance Kit data. Sources identify the component as Installation and the affected product as Sun ZFS Storage Appliance Kit AK Software 8.8.

Likely exposure

Exposure is limited to environments running Oracle/Sun ZFS Storage Appliance Kit AK Software 8.8 where high-privileged users can log on to the infrastructure hosting the product.

Exploitation context

The provided sources do not indicate active exploitation, and the CVE is not listed as KEV. Exploitation is described as difficult, local, high-privilege, and requiring human interaction from someone other than the attacker.

Researcher notes

Evidence is narrow: CVE metadata, CVSS vector, affected version, and Oracle advisory reference. No CWE, exploit details, or fixed version were provided in the bundle. Avoid assuming broader ZFS products are affected.

Mitigation direction

  • Check Oracle April 2021 CPU guidance for vendor remediation.
  • Inventory Oracle ZFS Storage Appliance Kit deployments for version 8.8.
  • Limit privileged logon access to appliance management infrastructure.
  • Require change control for installation or administrative workflows.
  • Monitor privileged changes affecting ZFS appliance accessible data.

Validation and detection

  • Confirm whether Sun ZFS Storage Appliance Kit AK Software 8.8 is present.
  • Map who has high-privileged logon access to the appliance infrastructure.
  • Review Oracle CPU April 2021 entries for this CVE.
  • Check administrative logs for unexpected data update, insert, or delete activity.
Prepared
Confidence
high
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2021-2147 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Low
CVSS
1.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
1.8CVSS 3.1LowCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N0.31.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

1.8Low
CVSS 3.1 vector shape for CVE-2021-2147Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Oracle CorporationSun ZFS Storage Appliance Kit (AK) Software8.8Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.