CVE-2023-39463Network attack vector

SYSTEM code execution via certificate-directory file write

Published May 3, 2024 · Updated Aug 2, 2024

Unrestricted file upload in Triangle MicroWorks SCADA Data Gateway 5.1.3.20324 allows remote attackers to execute code as SYSTEM. The trusted certification feature accepts attacker-controlled data for OpcUaSecurityCertificateAuthorityTrustDir and writes it to an arbitrary file location. The path normally requires authentication, but the published authentication mechanism can be bypassed, leaving full SYSTEM-context execution as the bounded consequence.

CVSS severity7.2
High
EPSS probability1.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Triangle MicroWorks SCADA Data Gateway 5.1.3.20324 allows remote attackers to execute code as SYSTEM. The trusted certification feature accepts attacker-controlled data for OpcUaSecurityCertificateAuthorityTrustDir and writes it to an arbitrary file location. The path normally requires authentication, but the published authentication mechanism can be bypassed, leaving full SYSTEM-context execution as the bounded consequence.

The record

CVE
CVE-2023-39463
Published
May 3, 2024
Updated
Aug 2, 2024
Vendor
Triangle MicroWorks
Product
SCADA Data Gateway
Classifications
CWE-434, T1190
Attack vector
network
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?

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  1. Affected versionversion=5.1.3.20324

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Triangle MicroWorks · SCADA Data Gatewayversion=5.1.3.20324

Published CVSS scores

7.2Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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