CVE-2020-11998: Apache ActiveMQ

Critical severity, CVSS 9.8. EPSS: 48.9% chance of exploitation in the next 30 days.

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

Affected products

• Apache ActiveMQ: version 5.15.12 only
• Oracle Communications Diameter Signaling Router: from 8.0.0, up to and including 8.5.0
• Oracle Communications Element Manager: from 8.2.0, up to and including 8.2.4.0
• Oracle Communications Session Report Manager: from 8.0.0, up to and including 8.2.2
• Oracle Communications Session Route Manager: from 8.0.0, up to and including 8.2.2
• Oracle Enterprise Repository: version 11.1.1.7.0 only
• Oracle Flexcube Private Banking: version 12.0.0 only; version 12.1.0 only

Published 2020-09-10. Last modified 2026-06-17.