CVE-2023-39458
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedTriangle 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceTriangle MicroWorks SCADA Data Gateway contains a hard-coded default SSL certificate used for authentication. Attackers with network adjacency can exploit this vulnerability to bypass authentication entirely, gaining unauthorized access to the system without providing valid credentials.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 5.1.3.20324CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Adjacent
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed versionLocate and examine the Triangle MicroWorks SCADA Data Gateway installation to determine the exact version number installed in the environmentAffected if The installed version is 5.1.3.20324 exactly, as this is the only version listed as affected
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Locate SSL certificate configurationFind the SSL/TLS certificate configuration files or settings used by the SCADA Data Gateway service - check installation directories, config folders, or service settings where certificates are storedAffected if A default or hard-coded certificate is configured and in use
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Inspect certificate detailsExamine the SSL certificate currently in use - check the certificate subject, issuer, serial number, and creation date to determine if it matches a factory defaultAffected if The certificate displays characteristics of a hard-coded default (such as default organizational name, generic subject fields, or known default values)
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Compare against known defaultsResearch or document what the factory-default SSL certificate looks like for this product and compare it to the currently deployed certificateAffected if The active certificate matches the hard-coded default certificate known to ship with version 5.1.3.20324
The environment is affected if the installed SCADA Data Gateway version is exactly 5.1.3.20324 AND the default SSL certificate from the factory installation remains in use without replacement.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataReplace the hard-coded default SSL certificate with a unique, properly generated certificate following industry best practices, and implement proper certificate lifecycle management. Consider network segmentation to limit exposure to adjacent network attackers.
- Consultation4.0 h
- Implementation8.0 h
- Testing12.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-39458 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-39458 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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