CVE-2021-28167

Name: CVE-2021-28167
Creator: NVD / NIST
Published: 2021-04-21T18:15:08.793+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.10%

Last modified Jun 17, 2026

CVE-2021-28167 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. In Eclipse Openj9 to version 0.25.0, usage of the jdk.internal.reflect.ConstantPool API causes the JVM in some cases to pre-resolve certain constant pool entries. This allows a user to call static methods or access static members without running the class initialization method, and may allow a user to observe uninitialized values.. EPSS estimates a 1.10% chance of exploitation in the next 30 days.

Description

In Eclipse Openj9 to version 0.25.0, usage of the jdk.internal.reflect.ConstantPool API causes the JVM in some cases to pre-resolve certain constant pool entries. This allows a user to call static methods or access static members without running the class initialization method, and may allow a user to observe uninitialized values.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.10%

61.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Eclipse	Openj9	<= 0.25.0

References

https://github.com/eclipse/openj9/issues/12016Exploit, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20240621-0006/
https://github.com/eclipse/openj9/issues/12016Exploit, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20240621-0006/

Timeline

Published: Apr 21, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-28167?

How severe is CVE-2021-28167?

CVE-2021-28167 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.10% probability of exploitation in the next 30 days.

How do I fix CVE-2021-28167?

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-2021-28167?

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

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Source: NVD / NIST