Is CVE-2021-44462 actively exploited?

No active exploitation of CVE-2021-44462 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-44462 be exploited remotely?

No. CVE-2021-44462 requires local access to exploit.

What is the CVSS score of CVE-2021-44462?

CVE-2021-44462 has a CVSS score of 7.1 (HIGH).

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HIGH

CVE-2021-44462

CWE-20Published: March 25, 2022· Updated: Jun 17, 2026

7.1

CVSS v3.1

Official Description

This vulnerability can be exploited by parsing maliciously crafted project files with Horner Automation Cscape EnvisionRV v4.50.3.1 and prior. The issues result from the lack of proper validation of user-supplied data, which can result in reads and writes past the end of allocated data structures. User interaction is required to exploit this vulnerability as an attacker must trick a valid user to open a malicious HMI project file.

NVD Source

Technical Analysis

CVE-2021-44462 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), with a CVSS base score of 7.1.