dbcve.org
WebaccessApplication · Advantech

CVE-2017-16753

HIGH · 7.5 CVSS v3.0 Published 2018-01-05
Fix available
A fix is available. Upgrade to 8.3 or later.
See remediation →
84/100
Remediation priority · High
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
An Improper Input Validation issue was discovered in Advantech WebAccess versions prior to 8.3. WebAccess allows some inputs that may cause the program to crash.

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

Improper input validation in Advantech WebAccess allows attackers to submit malicious inputs that can cause the application to crash. The vulnerability affects versions prior to 8.3 and is exploitable over the network without authentication, as indicated by the CVSS score.

MitigationUpgrade to WebAccess version 8.3 or later to remediate this vulnerability.

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:< 8.3

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
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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. Confirm Advantech WebAccess is installed
    Look for the WebAccess service running on your system, typically on Windows servers. Check services.msc or Task Manager for 'WebAccess' processes, or look for the installation directory (commonly C:\Advantech\WebAccess or similar)
    Affected if The software is present and running on the system
  2. Identify the installed version
    Access the WebAccess About page via the web interface (commonly at /WebAccess/About or /WebAccess/dashboard.htm) or check version.txt in the installation directory
    Affected if The version cannot be determined or shows a version number
  3. Compare version to affected range
    Match your identified version against the affected range (versions prior to 8.3)
    Affected if The installed version is less than 8.3 (for example: 8.2, 8.1, 8.0, etc.)
  4. Verify web interface is network-accessible
    Confirm the WebAccess web service is listening on port 80/443 or configured with network exposure
    Affected if The interface is accessible over the network (required for remote exploitation)

You are affected if Advantech WebAccess is installed with a version number lower than 8.3 and the web interface is network-accessible, as the improper input validation flaw is exploitable remotely without authentication.

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.

From vendor data
Upgrade available Upgrade to 8.3 or later
Fixed in 8.3
Interim mitigation

Upgrade to WebAccess version 8.3 or later to remediate this vulnerability.

Fix this in Webaccess Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.

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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-2017-16753 in production — separate from our analysis above.

No notes yet

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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