Is CVE-2023-39458 actively exploited?

No active exploitation of CVE-2023-39458 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-39458 be exploited remotely?

Partially. CVE-2023-39458 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2023-39458?

CVE-2023-39458 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2023-39458

CWE-798Published: May 3, 2024· Updated: Jun 17, 2026

5.3

CVSS v3.1

Official Description

Triangle MicroWorks SCADA Data Gateway Use of Hard-coded Credentials Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Triangle MicroWorks SCADA Data Gateway. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of certificates. The service uses a hard-coded default SSL certificate. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-20509.

NVD Source

Technical Analysis

CVE-2023-39458 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

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), with a CVSS base score of 5.3.