{"cve":"CVE-2020-13920","nvd":{"published":"2020-09-10T19:15:13.160","modified":"2026-06-17T02:53:53.967","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9},"cwes":["CWE-306"],"references":["http://activemq.apache.org/security-advisories.data/CVE-2020-13920-announcement.txt","https://lists.apache.org/thread.html/r946488fb942fd35c6a6e0359f52504a558ed438574a8f14d36d7dcd7%40%3Ccommits.activemq.apache.org%3E","https://lists.apache.org/thread.html/rb2fd3bf2dce042e0ab3f3c94c4767c96bb2e7e6737624d63162df36d%40%3Ccommits.activemq.apache.org%3E","https://lists.debian.org/debian-lts-announce/2020/10/msg00013.html","https://lists.debian.org/debian-lts-announce/2023/11/msg00013.html"],"products":["apache:activemq","debian:debian_linux","oracle:communications_diameter_signaling_router","oracle:flexcube_private_banking"],"source":"nvd","synced_at":"2026-10-19T21:09:20.498348299+00:00"},"epss":{"cve":"CVE-2020-13920","score":0.04544,"percentile":0.91574,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-xgrx-xpv2-6vp4","url":"https://osv.dev/vulnerability/GHSA-xgrx-xpv2-6vp4","summary":"Improper Authentication in Apache ActiveMQ","modified":"2024-03-14T22:03:23.572709Z","packages":[{"ecosystem":"Maven","name":"org.apache.activemq:activemq-parent","purl":"pkg:maven/org.apache.activemq/activemq-parent","ranges":["<5.15.12"],"fixed":["5.15.12"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}