Is CVE-2024-21920 actively exploited?

No active exploitation of CVE-2024-21920 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-21920 be exploited remotely?

No. CVE-2024-21920 requires local access to exploit.

What is the CVSS score of CVE-2024-21920?

CVE-2024-21920 has a CVSS score of 7.1 (HIGH).

HOME VULNERABILITIESCVE-2024-21920

HIGH

CVE-2024-21920

CWE-125Published: March 26, 2024· Updated: Jun 17, 2026

7.1

CVSS v3.1

Official Description

A memory buffer vulnerability in Rockwell Automation Arena Simulation could potentially let a threat actor read beyond the intended memory boundaries. This could reveal sensitive information and even cause the application to crash, resulting in a denial-of-service condition. To trigger this, the user would unwittingly need to open a malicious file shared by the threat actor.

NVD Source

Technical Analysis

CVE-2024-21920 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 7.1.