CVE-2021-3396
8.8 · HIGHOverview
CVE-2021-3396 is a high-severity vulnerability affecting opennms horizon. It was published on February 17, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
OpenNMS Meridian 2016, 2017, 2018 before 2018.1.25, 2019 before 2019.1.16, and 2020 before 2020.1.5, Horizon 1.2 through 27.0.4, and Newts <1.5.3 has Incorrect Access Control, which allows local and remote code execution using JEXL expressions.
Remediation
Check the references section for vendor advisories and patches from opennms. Update horizon to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| opennms | horizon | 16.0.0 | Affected |
| opennms | meridian | 2016.1.0 | Affected |
| opennms | newts | >= 0, < 1.5.3 | Affected |
Frequently Asked Questions
What is CVE-2021-3396?
CVE-2021-3396 is a high-severity vulnerability affecting opennms horizon. It was published on February 17, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2021-3396?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-3396?
Check the references section for vendor advisories and patches from opennms. Update horizon to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-3396?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-3396 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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