Is CVE-2023-3939 actively exploited?

No active exploitation of CVE-2023-3939 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-3939 be exploited remotely?

Yes. CVE-2023-3939 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-3939?

CVE-2023-3939 has a CVSS score of 10.0 (CRITICAL).

HOME VULNERABILITIESCVE-2023-3939

CRITICAL

CVE-2023-3939

CWE-78Published: May 21, 2024· Updated: Jun 17, 2026

10.0

CVSS v3.1

Official Description

Improper Neutralization of Special Elements used in an OS Command ('OS

Command Injection') vulnerability in ZkTeco-based OEM devices allows OS

Command Injection.

Since all the found command implementations are executed from the

superuser, their impact is the maximum possible.

This issue affects

ZkTeco-based OEM devices (ZkTeco ProFace X, Smartec ST-FR043, Smartec

ST-FR041ME and possibly others) with the ZAM170-NF-1.8.25-7354-Ver1.0.0

and possibly other.

NVD Source

Technical Analysis

CVE-2023-3939 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.