VULNERABILITY INTELLIGENCE

CVE-2020-12760

CVSS score8.8 HIGH

EPSS probability3.46%

CISA KEVNot currently listed

Published2020-05-11

Last modified2026-06-17

Description

An issue was discovered in OpenNMS Horizon before 26.0.1, and Meridian before 2018.1.19 and 2019 before 2019.1.7. The ActiveMQ channel configuration allowed for arbitrary deserialization of Java objects (aka ActiveMQ Minion payload deserialization), leading to remote code execution for any authenticated channel user regardless of its assigned permissions.