How severe is CVE-2021-39233?

CVE-2021-39233 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-39233 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-39233?

CVE-2021-39233 affects Apache Ozone. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-39233?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-39233 published?

CVE-2021-39233 was published on 2021-11-19 and last updated on 2026-06-17.

CVE-2021-39233

CVE-2021-39233 is a critical-severity vulnerability in Apache Ozone with a CVSS 3.x base score of 9.1. 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 2% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Apache Ozone
Published: 2021-11-19
Last modified: 2026-06-17

Description

In Apache Ozone versions prior to 1.2.0, Container related Datanode requests of Ozone Datanode were not properly authorized and can be called by any client.

Frequently asked questions

What is CVE-2021-39233?: In Apache Ozone versions prior to 1.2.0, Container related Datanode requests of Ozone Datanode were not properly authorized and can be called by any client.
How severe is CVE-2021-39233?: CVE-2021-39233 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-39233 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-39233?: CVE-2021-39233 affects Apache Ozone. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-39233?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-39233 published?: CVE-2021-39233 was published on 2021-11-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:ozone:*:*:*:*:*:*:*:*

More vulnerabilities in Apache Ozone

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