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Ecostruxure Opc Ua Server ExpertApplication · Se

CVE-2023-37200

MEDIUM · 5.5 CVSS v3.1 Published 2023-07-12
Fix available
A fix is available. Upgrade to 2.01 or later.
See remediation →
58/100
Remediation priority · Elevated
No privileges

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 · unedited
A CWE-611: Improper Restriction of XML External Entity Reference vulnerability exists that could cause loss of confidentiality when replacing a project file on the local filesystem and after manual restart of the server.

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 · moderate confidence

This is an XXE (XML External Entity) vulnerability (CWE-611) in project file handling. An attacker with local filesystem access can replace a project configuration file with a malicious XML file containing external entity references, and after a manual server restart, the parser will resolve these entities, allowing unauthorized read access to sensitive files on the local system.

MitigationDisable external entity resolution in XML parsers by configuring parsers to reject DTDs and external entities, or use a parser that has XXE protection enabled by default.

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
Ecostruxure Opc Ua Server ExpertApplication
Affected:< 2.01= 2.01

CVSS 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
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed product and version
    Locate Se Ecostruxure Opc Ua Server Expert installation and retrieve the version number from the application, typically via 'Add/Remove Programs', the application's 'About' dialog, or checking version info on the executable
    Affected if Version is 2.01 or any version lower than 2.01 (e.g., 1.x)
  2. Locate project configuration files
    Search for XML project configuration files used by the application - look in the application's data directory, projects folder, or user-specified project locations for .xml files that store project settings
    Affected if XML project configuration files exist and are writable by the user (attacker needs filesystem write access to replace them)
  3. Check XML parser security configuration
    If source code or configuration files are accessible, examine XML parser initialization code or configuration for settings that control external entity resolution - look for flags like 'DTD', 'external entities', or 'XXE' in parser configuration
    Affected if XML parsers are configured to allow external entities or DTD processing (no XXE protection is enabled)
  4. Verify server restart requirement
    Confirm the application runs as a service or daemon that requires manual restart to reload configuration files - check if project files are loaded at startup rather than dynamically
    Affected if The application requires a manual restart to reload project configuration changes, meaning replaced malicious files will be parsed after restart

You are affected if the installed version is 2.01 or any version below 2.01, and XML project configuration files exist in writable locations where an attacker could replace them with malicious XXE payloads.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Upgrade available Upgrade to 2.01 or later
Fixed in 2.01
Interim mitigation

Disable external entity resolution in XML parsers by configuring parsers to reject DTDs and external entities, or use a parser that has XXE protection enabled by default.

Recommended fix Moderate confidence

Ecoustic Opc Ua Server Expert version 2.02 or later

  1. 1. Navigate to the Schneider Electric download portal at download.schneider-electric.com
  2. 2. Locate Ecostruxure Opc Ua Server Expert in the product catalog
  3. 3. Download version 2.02 or later (the first release that includes the security fix for CVE-2023-37200)
  4. 4. Before upgrading, backup all existing project files and server configurations
  5. 5. Stop the Ecostruxure Opc Ua Server Expert service
  6. 6. Install the new version (2.02 or later) following the standard installation procedure
  7. 7. Restore the backed-up project files to the appropriate location on the local filesystem
  8. 8. Restart the server service to apply the changes
Caveat Review release notes for any configuration or feature changes between version 2.01 and the target upgrade version before proceeding

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Ecostruxure Opc Ua Server Expert Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-37200 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data