CVE-2024-20959

High-privilege appliance hang or repeated crash

Published Jan 16, 2024 · Updated Jun 3, 2025

Denial of service in Oracle ZFS Storage Appliance Kit 8.8 allows local users with high privileges to hang or repeatedly crash the appliance. Oracle identifies the affected locus only as the Core component and has not published the operation on untrusted input that causes the failure. Exploitation requires a high-privilege logon to the appliance infrastructure and affects availability without reported data disclosure or modification.

CVSS severity4.4
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Oracle ZFS Storage Appliance Kit 8.8 allows local users with high privileges to hang or repeatedly crash the appliance. Oracle identifies the affected locus only as the Core component and has not published the operation on untrusted input that causes the failure. Exploitation requires a high-privilege logon to the appliance infrastructure and affects availability without reported data disclosure or modification.

The record

CVE
CVE-2024-20959
Published
Jan 16, 2024
Updated
Jun 3, 2025
Vendor
Oracle
Product
Oracle ZFS Storage Appliance Kit
Classifications
T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jan 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Oracle · Oracle ZFS Storage Appliance Kitversion=8.8

Published CVSS scores

4.4OracleCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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