Is CVE-2024-21918 actively exploited?

No active exploitation of CVE-2024-21918 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-21918 be exploited remotely?

No. CVE-2024-21918 requires local access to exploit.

What is the CVSS score of CVE-2024-21918?

CVE-2024-21918 has a CVSS score of 7.8 (HIGH).

HOME VULNERABILITIESCVE-2024-21918

HIGH

CVE-2024-21918

CWE-416Published: March 26, 2024· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

A memory buffer vulnerability in Rockwell Automation Arena Simulation software could potentially allow a malicious user to insert unauthorized code to the software by corrupting the memory and triggering an access violation. Once inside, the threat actor can run harmful code on the system. This affects the confidentiality, integrity, and availability of the product. To trigger this, the user would unwittingly need to open a malicious file shared by the threat actor.

NVD Source

Technical Analysis

CVE-2024-21918 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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.