CVE & CISA-KEV Catalog

CVE-2021-3690

HIGH

7.5

CVSS v3

Description

A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability.

CWE-400Resource Exhaustion CWE-401Missing Release of Memory (Memory Leak)

How to fix

Remediation Available

undertowDebian

Fixed in:2.2.10-1CVE-2021-3690

eap7-activemq-artemisRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemisRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-cliRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-cliRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-commonsRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-commonsRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-core-clientRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-core-clientRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-dtoRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-dtoRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-hornetq-protocolRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-hornetq-protocolRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-hqclient-protocolRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-hqclient-protocolRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-jdbc-storeRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-jdbc-storeRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-jms-clientRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-jms-clientRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-jms-serverRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-jms-serverRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-journalRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-journalRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-nativeRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-nativeRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-raRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-raRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-selectorRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-selectorRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-serverRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-serverRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-service-extensionsRed Hat / RHEL

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-activemq-artemis-service-extensionsRocky

Fixed in:0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-artemis-nativeRed Hat / RHEL

Fixed in:1:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

Fixed in:1:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-artemis-nativeRocky

Fixed in:1:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

Fixed in:1:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-artemis-native-debuginfoRocky

Fixed in:1:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-artemis-native-debuginfoRed Hat / RHEL

Fixed in:1:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-artemis-native-wildflyRocky

Fixed in:1:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-artemis-native-wildflyRed Hat / RHEL

Fixed in:1:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-jboss-xnio-baseRed Hat / RHEL

Fixed in:0:3.5.11-1.Final_redhat_00001.1.ep7.el7RHSA-2025:4226

Fixed in:0:3.5.11-1.Final_redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-jboss-xnio-baseRocky

Fixed in:0:3.5.11-1.Final_redhat_00001.1.ep7.el7RHSA-2025:4226

Fixed in:0:3.5.11-1.Final_redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-jsoupRocky

Fixed in:0:1.14.2-1.redhat_00002.1.ep7.el7RHSA-2025:4226

Fixed in:0:1.14.2-1.redhat_00002.1.ep7.el7RHSA-2025:4226

eap7-jsoupRed Hat / RHEL

Fixed in:0:1.14.2-1.redhat_00002.1.ep7.el7RHSA-2025:4226

Fixed in:0:1.14.2-1.redhat_00002.1.ep7.el7RHSA-2025:4226

eap7-undertowRed Hat / RHEL

Fixed in:0:1.4.18-14.SP13_redhat_00001.1.ep7.el7RHSA-2025:4226

Fixed in:0:1.4.18-14.SP13_redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-undertowRocky

Fixed in:0:1.4.18-14.SP13_redhat_00001.1.ep7.el7RHSA-2025:4226

Fixed in:0:1.4.18-14.SP13_redhat_00001.1.ep7.el7RHSA-2025:4226

eap7-wildflyRocky

Fixed in:0:7.1.10-2.GA_redhat_00002.1.ep7.el7RHSA-2025:4226

Fixed in:0:7.1.10-2.GA_redhat_00002.1.ep7.el7RHSA-2025:4226

eap7-wildflyRed Hat / RHEL

Fixed in:0:7.1.10-2.GA_redhat_00002.1.ep7.el7RHSA-2025:4226

Fixed in:0:7.1.10-2.GA_redhat_00002.1.ep7.el7RHSA-2025:4226

eap7-wildfly-modulesRed Hat / RHEL

Fixed in:0:7.1.10-2.GA_redhat_00002.1.ep7.el7RHSA-2025:4226

eap7-wildfly-modulesRocky

Fixed in:0:7.1.10-2.GA_redhat_00002.1.ep7.el7RHSA-2025:4226

eap7-woodstox-coreRocky

Fixed in:0:5.0.3-2.redhat_00002.1.ep7.el7RHSA-2025:4226

Fixed in:0:5.0.3-2.redhat_00002.1.ep7.el7RHSA-2025:4226

eap7-woodstox-coreRed Hat / RHEL

Fixed in:0:5.0.3-2.redhat_00002.1.ep7.el7RHSA-2025:4226

Fixed in:0:5.0.3-2.redhat_00002.1.ep7.el7RHSA-2025:4226

eap7-xml-securityRed Hat / RHEL

Fixed in:0:2.0.10-2.redhat_00002.1.ep7.el7RHSA-2025:4226

Fixed in:0:2.0.10-2.redhat_00002.1.ep7.el7RHSA-2025:4226

eap7-xml-securityRocky

Fixed in:0:2.0.10-2.redhat_00002.1.ep7.el7RHSA-2025:4226

Fixed in:0:2.0.10-2.redhat_00002.1.ep7.el7RHSA-2025:4226

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.38%probability of exploitation in 30 days

69thpercentile

Moderate risk: more likely to be exploited than 69% of all known CVEs.

References

Patch1

github.com

Exploit1

issues.redhat.com

Vendor Advisory2

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix
CVE-2018-1000115	High	7.5	89%	-	Fix

Embed a live status badge for CVE-2021-3690

Markdown

[![CVE-2021-3690](https://tridentstack.com/cve/badge/CVE-2021-3690.svg)](https://tridentstack.com/cve/CVE-2021-3690)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-3690"><img src="https://tridentstack.com/cve/badge/CVE-2021-3690.svg" alt="CVE-2021-3690"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.