Is CVE-2023-3943 actively exploited?

No active exploitation of CVE-2023-3943 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-3943 be exploited remotely?

Yes. CVE-2023-3943 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-3943?

CVE-2023-3943 has a CVSS score of 10.0 (CRITICAL).

HOME VULNERABILITIESCVE-2023-3943

CRITICAL

CVE-2023-3943

CWE-121Published: May 21, 2024· Updated: Jun 17, 2026

10.0

CVSS v3.1

Official Description

Stack-based Buffer Overflow vulnerability in ZkTeco-based OEM devices allows, in some cases, the execution of arbitrary code. Due to the lack of protection mechanisms such as stack canaries and PIE, it is possible to successfully execute code even under restrictive conditions.

This issue affects

ZkTeco-based OEM devices (ZkTeco ProFace X, Smartec ST-FR043, Smartec ST-FR041ME and possibly others)

with firmware

ZAM170-NF-1.8.25-7354-Ver1.0.0 and possibly others.

NVD Source

Technical Analysis

CVE-2023-3943 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.