CVE-2023-39458

Authentication bypass via hard-coded default SSL certificate

Published May 3, 2024 · Updated Aug 2, 2024

Authentication bypass in Triangle MicroWorks SCADA Data Gateway 5.1.3.20324 allows network-adjacent attackers to access protected functions. The service presents a hard-coded default SSL certificate that can be reused to defeat its certificate-based authentication. No account is required, but the attacker must be network-adjacent; exploitation exposes protected service data without reported modification or interruption.

CVSS severity5.3
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Triangle MicroWorks SCADA Data Gateway 5.1.3.20324 allows network-adjacent attackers to access protected functions. The service presents a hard-coded default SSL certificate that can be reused to defeat its certificate-based authentication. No account is required, but the attacker must be network-adjacent; exploitation exposes protected service data without reported modification or interruption.

The record

CVE
CVE-2023-39458
Published
May 3, 2024
Updated
Aug 2, 2024
Vendor
Triangle MicroWorks
Product
SCADA Data Gateway
Classifications
CWE-798, T1649
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.1.3.20324

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Triangle MicroWorks · SCADA Data Gatewayversion=5.1.3.20324

Published CVSS scores

5.3Zero Day InitiativeCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1649Steal or Forge Authentication Certificates

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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