dbcve.org
Webaccess\/scadaApplication · Advantech

CVE-2023-1437

CRITICAL · 9.8 CVSS v3.1 Published 2023-08-02
Fix available
A fix is available. Upgrade to 9.1.4 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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
All versions prior to 9.1.4 of Advantech WebAccess/SCADA are vulnerable to use of untrusted pointers. The RPC arguments the client sent could contain raw memory pointers for the server to use as-is. This could allow an attacker to gain access to the remote file system and the ability to execute commands and overwrite files.

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 confidence

Advantech WebAccess/SCADA versions prior to 9.1.4 contain a critical vulnerability in the RPC service where client-supplied arguments contain raw memory pointers that the server uses directly without validation. This allows attackers to perform arbitrary memory access, leading to remote file system access, command execution, and file overwrite capabilities.

MitigationUpgrade to WebAccess/SCADA version 9.1.4 or later. If immediate upgrade is not feasible, isolate the RPC service from untrusted networks and implement strict network segmentation to reduce exposure.

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
Webaccess\/scadaApplication
Affected:< 9.1.4

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
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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. Verify Advantech WebAccess/SCADA is installed
    Check for WebAccess/SCADA installation by looking for the product in Windows Programs and Features ( Programs and Features ), or search for installation directories such as C:\Advantech\WebAccess or C:\WebAccess
    Affected if The software is present on the system
  2. Determine the installed version
    Locate the version information in the installation directory, typically in a file named version.txt, about.txt, or in the program's executable properties. Common paths include C:\Advantech\WebAccess\VERSION or within the main executable's file properties
    Affected if The installed version is any version prior to 9.1.4 (for example, 9.1.3, 9.1.2, 9.0.x, or earlier releases)
  3. Confirm the RPC service is enabled
    Check if the WebAccess RPC service is running by opening Services (services.msc) and looking for services named WebAccess RPC, Advantech WebAccess RPC, or similar RPC-related services, or check the service configuration in the WebAccess Manager console
    Affected if The RPC service is running or configured to start automatically
  4. Assess network exposure of the RPC service
    Review firewall rules and network configuration to determine if the RPC service ports (typically TCP ports involved in WebAccess communication) are exposed to untrusted networks or the internet. Use netstat -an or the Windows Firewall advanced security settings to identify listening ports associated with WebAccess
    Affected if The RPC service ports are accessible from untrusted network segments or directly from the internet

The environment is affected if Advantech WebAccess/SCADA version prior to 9.1.4 is installed with the RPC service enabled and exposed to potentially untrusted networks.

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 9.1.4 or later
Fixed in 9.1.4
Interim mitigation

Upgrade to WebAccess/SCADA version 9.1.4 or later. If immediate upgrade is not feasible, isolate the RPC service from untrusted networks and implement strict network segmentation to reduce exposure.

Recommended fix High confidence

WebAccess/SCADA 9.1.4 or later

  1. Confirm current WebAccess/SCADA version by checking the application or system information
  2. Create a full backup of the system including configuration files and databases
  3. Review Advantech release notes and upgrade documentation for version 9.1.4
  4. Download WebAccess/SCADA version 9.1.4 or later from the official Advantech support portal
  5. Test the upgrade in a non-production environment first
  6. Apply the upgrade to production systems following standard change management procedures
  7. Verify the installation was successful and the application functions correctly
  8. Confirm the vulnerability is remediated by verifying the version
Caveat Review release notes for any configuration or compatibility changes between current version and 9.1.4; some legacy features or integrations may require updates

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

Fix this in Webaccess\/scada Scoped from the published advisory
  • Consultation6.0 h
  • Implementation4.0 h
  • Testing8.0 h
  • Review / QA3.0 h
21.0 hours of engineering $3,660
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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-2023-1437 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