Advisory Published
Advisory Published


First published: Mon May 11 2020(Updated: )

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.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Opennms Opennms Horizon<26.1.0
Opennms Opennms Meridian<2018.1.19
Opennms Opennms Meridian>=2019<2019.1.7

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Frequently Asked Questions

  • What is the severity of CVE-2020-12760?

    The severity of CVE-2020-12760 is high with a CVSS score of 8.8.

  • What is the vulnerability in OpenNMS Horizon and Meridian?

    CVE-2020-12760 is a vulnerability in OpenNMS Horizon before 26.0.1 and Meridian before 2018.1.19 and 2019 before 2019.1.7 that allows for arbitrary deserialization of Java objects, leading to remote code execution.

  • How can the vulnerability be exploited?

    The vulnerability in CVE-2020-12760 can be exploited through the ActiveMQ channel configuration, allowing for arbitrary deserialization of Java objects.

  • What is the remedy for CVE-2020-12760?

    The remedy for CVE-2020-12760 is to upgrade to OpenNMS Horizon 26.0.1 or later, or Meridian 2018.1.19 or later.

  • Where can I find more information about CVE-2020-12760?

    More information about CVE-2020-12760 can be found at the following references: [NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-12760), [OpenNMS Releases](https://github.com/OpenNMS/opennms/releases/tag/opennms-26.0.1-1), [OpenNMS Issue Tracker](https://issues.opennms.org/browse/NMS-12673).


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