CVE-2021-25642

Name: CVE-2021-25642
Creator: NVD / NIST
Published: 2022-08-25T14:15:09.067+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.82%

Last modified Jun 17, 2026

CVE-2021-25642 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. ZKConfigurationStore which is optionally used by CapacityScheduler of Apache Hadoop YARN deserializes data obtained from ZooKeeper without validation. An attacker having access to ZooKeeper can run arbitrary commands as YARN user by exploiting this. EPSS estimates a 1.82% chance of exploitation in the next 30 days.

Description

ZKConfigurationStore which is optionally used by CapacityScheduler of Apache Hadoop YARN deserializes data obtained from ZooKeeper without validation. An attacker having access to ZooKeeper can run arbitrary commands as YARN user by exploiting this. Users should upgrade to Apache Hadoop 2.10.2, 3.2.4, 3.3.4 or later (containing YARN-11126) if ZKConfigurationStore is used.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.82%

76.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apache	Hadoop	>= 2.9.0, < 2.10.2
Apache	Hadoop	>= 3.0.0, < 3.2.4
Apache	Hadoop	>= 3.3.0, < 3.3.4

References

https://lists.apache.org/thread/g6vf2h4wdgzzdgk91mqozhs58wotq150Mailing List, Vendor Advisory
https://security.netapp.com/advisory/ntap-20221201-0003/Third Party Advisory
https://lists.apache.org/thread/g6vf2h4wdgzzdgk91mqozhs58wotq150Mailing List, Vendor Advisory
https://security.netapp.com/advisory/ntap-20221201-0003/Third Party Advisory

Timeline

Published: Aug 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-25642?

How severe is CVE-2021-25642?

CVE-2021-25642 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.82% probability of exploitation in the next 30 days.

How do I fix CVE-2021-25642?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-25642?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST