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CVE-2021-4040

Published: Aug 24, 2022Updated: Jun 15, 2026 Sources: CVE List NVD GHSACWE-400
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
2.4%
Top 18.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-400CWE-787

Affected Products

AMQ Brokern/a
org.apache.activemq:artemis-core-clientMavenOSS Libraries
amq brokerredhat
On-prem
Operating Systems / linux-distro
artemisapache
On-premDatabase
Databases / cache-message-queue
mavenpackage-ecosystemOSS Libraries
redhatcommercialUSOperating Systemsaka red hat
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

3 techniques
Impact
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://bugzilla.redhat.com/show_bug.cgi?id=2028254
bugzilla.redhat.com
https://access.redhat.com/security/cve/CVE-2021-4040
access.redhat.com
https://issues.apache.org/jira/browse/ARTEMIS-3593
issues.apache.org
and 6 more references View all →

Timeline

Published
Aug 24, 2022
Last Updated
Jun 15, 2026

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