Is CVE-2023-0870 actively exploited?

No active exploitation of CVE-2023-0870 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-0870 be exploited remotely?

Partially. CVE-2023-0870 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2023-0870?

CVE-2023-0870 has a CVSS score of 6.7 (MEDIUM).

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MEDIUM

CVE-2023-0870

CWE-352Published: March 22, 2023· Updated: Jun 17, 2026

6.7

CVSS v3.1

Official Description

A form can be manipulated with cross-site request forgery in multiple versions of OpenNMS Meridian and Horizon. This can potentially allow an attacker to gain access to confidential information and compromise integrity. The solution is to upgrade to Meridian 2023.1.1 or Horizon 31.0.6 or newer. Meridian and Horizon installation instructions state that they are intended for installation within an organization's private networks and should not be directly accessible from the Internet.

NVD Source

Technical Analysis

CVE-2023-0870 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 6.7.