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CVE-2020-11998

Remote code execution in Apache ActiveMQ

9.8 CriticalPublic exploitFix available

A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

48.9%Up 43.6 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 9.8

A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13

Record
CVE-2020-11998
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated
2026-11-02
CVE List No score

A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13

Record
CVE-2020-11998
Updated
2026-11-02
EUVDEUVD-2022-1236 No score

A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13

Record
EUVD-2022-1236
Updated
2026-11-03
GitHub AdvisoriesGHSA-wqfh-9m4g-7x6x 9.8

Remote code execution in Apache ActiveMQ

A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack - A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code. Mitigation - Upgrade to Apache ActiveMQ 5.15.13

Record
GHSA-wqfh-9m4g-7x6x
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-94
Updated
2026-11-02
OSV 9.8

A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13

Record
CVE-2020-11998
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-wqfh-9m4g-7x6x 9.8

Remote code execution in Apache ActiveMQ

A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack - A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code. Mitigation - Upgrade to Apache ActiveMQ 5.15.13

Record
GHSA-wqfh-9m4g-7x6x
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-94
Updated
2026-11-02
OSVUBUNTU-CVE-2020-11998 9.8

A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13

Record
UBUNTU-CVE-2020-11998
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVBIT-activemq-2020-11998 No score

A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13

Record
BIT-activemq-2020-11998
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
org.apache.activemq:activemq-parent
Maven
5.15.12 to 5.15.12
5.15.13
activemq
Bitnami
5.15.12 to 5.15.12 None known
org.apache.activemq:activemq-parent
Maven
5.15.12 up to 5.15.13
5.15.13
activemq
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
5.6.0+dfsg1-4+deb8u1ubuntu15.6.0+dfsg1-55.13.2+dfsg-25.13.2+dfsg-2ubuntu0.1~esm1
None known
activemq
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
5.14.5-35.15.2-25.15.3-25.15.8-2~18.045.15.8-2~18.04.1~esm1
None known
activemq
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
5.15.10-15.15.11-15.15.11-1ubuntu0.1~esm1
None known
activemq
Ubuntu:Pro:22.04:LTS
All versions, plus listed versions
5.16.1-15.16.1-1ubuntu0.1~esm15.16.1-1ubuntu0.1
None known
activemq
Ubuntu:24.04:LTS
All versions, plus listed versions
5.17.2+dfsg-25.17.6+dfsg-1
None known
activemq
Ubuntu:25.10
All versions, plus listed versions
5.17.6+dfsg-15.17.6+dfsg-2
None known
activemq
Ubuntu:26.10
All versions, plus listed versions
5.17.6+dfsg-25.17.6+dfsg-2ubuntu1
None known
activemq
Ubuntu:26.04:LTS
All versions, plus listed versions
5.17.6+dfsg-2
None known

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubshoucheng3/apache__activemq_CVE-2020-11998_5-15-122025-08-17

History

History
RecordedChangedSources
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

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

In short

CVE-2020-11998 is a critical vulnerability (CVSS 9.8) in Apache Activemq, published September 10, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 48.9%, the 98th percentile. Fixed in org.apache.activemq:activemq-parent 5.15.13.

References

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