CVE-2021-39235

mediumpriority · track · 27EPSS 0.016 · 75 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.55% (75th) EPSS

CVSS 4 · medium

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

In Apache Ozone before 1.2.0, Ozone Datanode doesn't check the access mode parameter of the block token. Authenticated users with valid READ block token can do any write operation on the same block.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Nsecondary · OSV

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-732USprimaryCWE-732US

affected products (3)

Products and version ranges known to be affected.

Apache Software Foundation Apache Ozone≤ 1.0 ≤1.0enisa_euvdEU
apache ozone< 1.2.0nvdUScpe:2.3:a:apache:ozone:*:*:*:*:*:*:*:*
Maven org.apache.ozone:ozone-main< 1.2.0osvUSpkg:maven/org.apache.ozone/ozone-main

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-c6j7-4fr9-c76pIncorrect permissions in Apache Ozone2021-11-23ghsa · osvUS
In Apache Ozone before 1.2.0, Ozone Datanode doesn't check the access mode parameter of the block token. Authenticated users with valid READ block token can do any write operation on the same block.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2021-11-19modified 2026-06-17

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references (6)

External citations — patches, advisories, analysis.

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