CVE-2020-12760

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.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.55% Top 20%
Vendor Advisory opennms.org Vendor Advisory opennms.com Vendor Advisory opennms.com Vendor Advisory opennms.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.opennms.com/en/blog/2020-04-29-opennms-horizon-26-0-1-luchador-released/ release notes vendor advisory
https://www.opennms.com/en/blog/2020-04-29-opennms-meridian-2019-1-6-europa-released/ release notes vendor advisory
https://www.opennms.com/en/blog/2020-04-29-opennms-meridian-2018-1-18-wildfire-released/ release notes vendor advisory
https://github.com/OpenNMS/opennms/releases/tag/opennms-26.0.1-1 release notes
https://issues.opennms.org/browse/NMS-12673 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-12760?
CVE-2020-12760 has been scored as a high severity vulnerability.
How to fix CVE-2020-12760?
To fix CVE-2020-12760, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-12760 being actively exploited in the wild?
It is possible that CVE-2020-12760 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.