How severe is CVE-2023-21833?

CVE-2023-21833 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2023-21833 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-21833?

CVE-2023-21833 affects Oracle Zfs Storage Appliance Kit. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-21833?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-21833 have an EU (EUVD) identifier?

Yes. CVE-2023-21833 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-25999.

When was CVE-2023-21833 published?

CVE-2023-21833 was published on 2024-02-17 and last updated on 2026-06-17.

CVE-2023-21833

CVE-2023-21833 is a medium-severity vulnerability in Oracle Zfs Storage Appliance Kit with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-25999
Weakness: CWE-200
Affected product: Oracle Zfs Storage Appliance Kit
Published: 2024-02-17
Last modified: 2026-06-17

Description

Vulnerability in the Oracle ZFS Storage Appliance Kit product of Oracle Systems (component: Object Store). 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 unauthorized read access to a subset of Oracle ZFS Storage Appliance Kit accessible data. CVSS 3.1 Base Score 4.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

Frequently asked questions

What is CVE-2023-21833?: Vulnerability in the Oracle ZFS Storage Appliance Kit product of Oracle Systems (component: Object Store). 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 unauthorized read access to a subset of Oracle ZFS Storage Appliance Kit accessible data. CVSS 3.1 Base Score 4.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).
How severe is CVE-2023-21833?: CVE-2023-21833 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2023-21833 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-21833?: CVE-2023-21833 affects Oracle Zfs Storage Appliance Kit. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-21833?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-21833 have an EU (EUVD) identifier?: Yes. CVE-2023-21833 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-25999.
When was CVE-2023-21833 published?: CVE-2023-21833 was published on 2024-02-17 and last updated on 2026-06-17.

References

https://www.oracle.com/security-alerts/cpujan2024.html

Affected products (1)

cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*

More vulnerabilities in Oracle Zfs Storage Appliance Kit

CVE-2022-23943 — Critical (CVSS 9.8): Out-of-bounds Write vulnerability in mod_sed of Apache HTTP Server allows an attacker to overwrite heap memory with…
CVE-2022-22720 — Critical (CVSS 9.8): Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered discarding the…
CVE-2022-25315 — Critical (CVSS 9.8): In Expat (aka libexpat) before 2.4.5, there is an integer overflow in storeRawNames.
CVE-2022-25236 — Critical (CVSS 9.8): xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into…
CVE-2022-25235 — Critical (CVSS 9.8): xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a…
CVE-2021-44790 — Critical (CVSS 9.8): A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from…

All CVEs affecting Oracle Zfs Storage Appliance Kit →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…
CVE-2025-29270 — Critical (CVSS 10.0): Incorrect access control in the realtime.cgi endpoint of Deep Sea Electronics devices DSE855 v1.1.0 to v1.1.26 allows…
CVE-2025-61481 — Critical (CVSS 10.0): An issue in MikroTik RouterOS v.7.14.2 and SwOS v.2.18 exposes the WebFig management interface over cleartext HTTP by…
CVE-2025-53624 — Critical (CVSS 10.0): The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user.…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →