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WebaccessApplication · Advantech

CVE-2018-10589

CRITICAL · 9.8 CVSS v3.0 Published 2018-05-15
Fix available
A fix is available. Upgrade to 8.3.1 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
In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard versions V.2.0.15 and prior, WebAccess Scada Node versions prior to 8.3.1, and WebAccess/NMS 2.0.3 and prior, a path transversal vulnerability has been identified, which may allow an attacker to execute arbitrary code.

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

A path traversal vulnerability in Advantech WebAccess allows attackers to access arbitrary files on the system using '../' sequences in input parameters. Combined with the ability to execute arbitrary code (CVSS 9.8), this indicates the vulnerability likely allows uploading or accessing malicious files that can then be executed, possibly through accessible configuration or script files.

MitigationApply vendor patches: upgrade to WebAccess 8.3.1+ or WebAccess/NMS 2.0.4+. If immediate patching is not feasible, restrict network access to the WebAccess web interface using firewall rules or VPN, and implement strict input validation on file path parameters.

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
WebaccessApplication
Affected:<= 8.2_20170817<= 8.3.0
Webaccess DashboardApplication
Affected:<= 2.0.15
Webaccess ScadaApplication
Affected:< 8.3.1
Webaccess\/nmsApplication
Affected:<= 2.0.3

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:3.0/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. Identify the installed Advantech WebAccess version
    Locate the WebAccess installation directory and check version information in the program files, configuration files, or the web interface about page
    Affected if The installed version is WebAccess <= 8.2_20170817, WebAccess <= 8.3.0, WebAccess Scada < 8.3.1, WebAccess Dashboard <= 2.0.15, or WebAccess/NMS <= 2.0.3
  2. Verify the WebAccess web interface is accessible
    Attempt to access the WebAccess web portal URLs (typically ports 80/443 or 8080/8443) from a network location
    Affected if The web interface is exposed on the network, as the path traversal flaw is exploited via HTTP requests containing '../' sequences in input parameters
  3. Identify exposed file parameters
    Review web access logs or proxy configurations for requests containing '../' sequences in file path parameters
    Affected if Requests with directory traversal patterns are being processed by the WebAccess application, indicating the vulnerable feature is in use
  4. Check for accessible configuration or script directories
    Examine the WebAccess installation for configuration files, script directories, or upload folders that may be accessible via the web interface
    Affected if The application allows access to configuration files, scripts, or upload directories through the path traversal vulnerability, which could enable code execution

You are affected if your installed WebAccess version falls within the vulnerable ranges AND the web interface is network-accessible, allowing attackers to exploit the path traversal to access sensitive files or execute code.

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 8.3.1 or later
Fixed in 8.3.1
Interim mitigation

Apply vendor patches: upgrade to WebAccess 8.3.1+ or WebAccess/NMS 2.0.4+. If immediate patching is not feasible, restrict network access to the WebAccess web interface using firewall rules or VPN, and implement strict input validation on file path parameters.

Recommended fix Moderate confidence

WebAccess >= 8.3.1, WebAccess Dashboard >= 2.0.16, WebAccess Scada >= 8.3.1, WebAccess/NMS >= 2.0.4

  1. Identify the specific WebAccess component affected (WebAccess, WebAccess Dashboard, WebAccess Scada, or WebAccess/NMS)
  2. For WebAccess versions <= 8.2_20170817 or <= 8.3.0, upgrade to version 8.3.1 or later
  3. For WebAccess Dashboard versions <= 2.0.15, upgrade to version 2.0.16 or later
  4. For WebAccess Scada versions < 8.3.1, upgrade to version 8.3.1 or later
  5. For WebAccess/NMS versions <= 2.0.3, upgrade to version 2.0.4 or later
  6. After upgrading, verify the path traversal vulnerability is remediated by reviewing release notes and confirming the fix was applied
  7. Implement network segmentation to limit exposure of the WebAccess interface to trusted networks only

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

Fix this in Webaccess Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing10.0 h
  • Review / QA4.0 h
23.0 hours of engineering $3,900
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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-2018-10589 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