Is CVE-2021-38454 actively exploited?

No active exploitation of CVE-2021-38454 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-38454 be exploited remotely?

Yes. CVE-2021-38454 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-38454?

CVE-2021-38454 has a CVSS score of 10.0 (CRITICAL).

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CRITICAL

CVE-2021-38454

CWE-284Published: October 12, 2021· Updated: Jun 17, 2026

10.0

CVSS v3.1

Official Description

A path traversal vulnerability in the Moxa MXview Network Management software Versions 3.x to 3.2.2 may allow an attacker to create or overwrite critical files used to execute code, such as programs or libraries.

NVD Source

Technical Analysis

CVE-2021-38454 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

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 10.0.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.