CVE-2021-20318

The HornetQ component of Artemis in EAP 7 was not updated with the fix for CVE-2016-4978. A...

7.2 HighFix available

The HornetQ component of Artemis in EAP 7 was not updated with the fix for CVE-2016-4978. A remote attacker could use this flaw to execute arbitrary code with the permissions of the application using a JMS ObjectMessage.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: High
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.76%Up 0.8 points since Dec 24, 2021

What each source reports

NVD Score used 7.2

Record: CVE-2021-20318
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 6.5 MediumAV:N/AC:L/Au:S/C:P/I:P/A:P
Weakness: CWE-502
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-20318
Weakness: CWE-502
Updated: 2026-11-02

EUVDEUVD-2021-7743 No score

Record: EUVD-2021-7743
Updated: 2026-11-03

GitHub AdvisoriesGHSA-36vx-8x4w-9h2m No score

The HornetQ component of Artemis in EAP 7 was not updated with the fix for CVE-2016-4978. A...

Record: GHSA-36vx-8x4w-9h2m
Weakness: CWE-502
Updated: 2026-11-02

OSVRHSA-2022:0400 7.5

Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.3 security update

Record: RHSA-2022:0400
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVRHSA-2022:0401 7.5

Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.3 security update

Record: RHSA-2022:0401
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

redhat jboss enterprise application platform

Affected packages

Affected packages
Package	Affected	Fixed
`eap7-undertow` Red Hat:jboss_enterprise_application_platform:7.4::el7	before 0:2.2.13-1.SP2_redhat_00001.1.el7eap	0:2.2.13-1.SP2_redhat_00001.1.el7eap
`eap7-hornetq` Red Hat:jboss_enterprise_application_platform:7.4::el7	before 0:2.4.8-1.Final_redhat_00001.1.el7eap	0:2.4.8-1.Final_redhat_00001.1.el7eap
`eap7-hornetq-commons` Red Hat:jboss_enterprise_application_platform:7.4::el7	before 0:2.4.8-1.Final_redhat_00001.1.el7eap	0:2.4.8-1.Final_redhat_00001.1.el7eap
`eap7-hornetq-core-client` Red Hat:jboss_enterprise_application_platform:7.4::el7	before 0:2.4.8-1.Final_redhat_00001.1.el7eap	0:2.4.8-1.Final_redhat_00001.1.el7eap
`eap7-hornetq-jms-client` Red Hat:jboss_enterprise_application_platform:7.4::el7	before 0:2.4.8-1.Final_redhat_00001.1.el7eap	0:2.4.8-1.Final_redhat_00001.1.el7eap
`eap7-undertow` Red Hat:jboss_enterprise_application_platform:7.4::el8	before 0:2.2.13-1.SP2_redhat_00001.1.el8eap	0:2.2.13-1.SP2_redhat_00001.1.el8eap
`eap7-hornetq` Red Hat:jboss_enterprise_application_platform:7.4::el8	before 0:2.4.8-1.Final_redhat_00001.1.el8eap	0:2.4.8-1.Final_redhat_00001.1.el8eap
`eap7-hornetq-commons` Red Hat:jboss_enterprise_application_platform:7.4::el8	before 0:2.4.8-1.Final_redhat_00001.1.el8eap	0:2.4.8-1.Final_redhat_00001.1.el8eap
`eap7-hornetq-core-client` Red Hat:jboss_enterprise_application_platform:7.4::el8	before 0:2.4.8-1.Final_redhat_00001.1.el8eap	0:2.4.8-1.Final_redhat_00001.1.el8eap
`eap7-hornetq-jms-client` Red Hat:jboss_enterprise_application_platform:7.4::el8	before 0:2.4.8-1.Final_redhat_00001.1.el8eap	0:2.4.8-1.Final_redhat_00001.1.el8eap

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-20318 is a high vulnerability (CVSS 7.2) in Redhat Jboss Enterprise Application Platform, published December 23, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.76%, the 78th percentile. Fixed in eap7-undertow 0:2.2.13-1.SP2_redhat_00001.1.el7eap.

References

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