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CVE-2021-20318

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-23 · updated 2026-06-17
• Weakness: CWE-502

Description

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.

Affected products

• Red Hat JBoss EAP: 7.3.9-general_availability, 7.4.0-general_availability

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2010559
• https://bugzilla.redhat.com/show_bug.cgi?id=2010559

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