CVE-2021-4040

A flaw was found in AMQ Broker. This issue can cause a partial interruption to the availability of AMQ Broker via an Out of memory (OOM) condition. This flaw allows an attacker to partially disrupt availability to the broker through a sustained attack of maliciously crafted messages. The highest threat from this vulnerability is system availability.

• CWE-400
• CWE-787

• https://access.redhat.com/security/cve/CVE-2021-4040Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2028254Issue Tracking, Vendor Advisory
• https://github.com/apache/activemq-artemis/pull/3871/commitsPatch, Third Party Advisory
• https://issues.apache.org/jira/browse/ARTEMIS-3593Patch, Third Party Advisory
• https://access.redhat.com/security/cve/CVE-2021-4040Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2028254Issue Tracking, Vendor Advisory
• https://github.com/apache/activemq-artemis/pull/3871/commitsPatch, Third Party Advisory
• https://issues.apache.org/jira/browse/ARTEMIS-3593Patch, Third Party Advisory

Published

Aug 24, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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