CVE-2020-13920: Apache ActiveMQ

Medium severity, CVSS 5.9. EPSS: 4.5% chance of exploitation in the next 30 days.

Apache ActiveMQ uses LocateRegistry.createRegistry() to create the JMX RMI registry and binds the server to the "jmxrmi" entry. It is possible to connect to the registry without authentication and call the rebind method to rebind jmxrmi to something else. If an attacker creates another server to proxy the original, and bound that, he effectively becomes a man in the middle and is able to intercept the credentials when an user connects. Upgrade to Apache ActiveMQ 5.15.12.

Affected products

• Apache ActiveMQ: before 5.15.12 (fixed in 5.15.12)
• Debian Debian Linux: version 9.0 only
• Oracle Communications Diameter Signaling Router: from 8.0.0, up to and including 8.2.2
• Oracle Flexcube Private Banking: version 12.0.0 only; version 12.1.0 only

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