dbcve.org
Webaccess Hmi DesignerApplication · Advantech

CVE-2018-8835

HIGH · 7.8 CVSS v3.0 Published 2018-04-25
Fix available
A fix is available. Upgrade to after 2.1.7.32 or later.
See remediation →
81/100
Remediation priority · High
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
Double free vulnerabilities in Advantech WebAccess HMI Designer 2.1.7.32 and prior caused by processing specially crafted .pm3 files may allow remote code execution.

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

A double-free vulnerability exists in Advantech WebAccess HMI Designer 2.1.7.32 and prior versions. When the application parses specially crafted .pm3 project files, it incorrectly frees memory twice, which can be exploited to achieve remote code execution.

MitigationAvoid opening .pm3 files from untrusted or unknown sources. Update to a patched version of WebAccess HMI Designer when released by Advantech, or apply any available vendor security updates.

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 Hmi DesignerApplication
Affected:<= 2.1.7.32

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
High
Availability
High

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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. Confirm WebAccess HMI Designer is installed
    Look for Advantech WebAccess HMI Designer in the installed programs list (Control Panel > Programs and Features) or search for the application executable in the program files directory
    Affected if The application is present on the system
  2. Identify installed version number
    Right-click the WebAccess HMI Designer executable, select Properties, and check the Details tab for the version number; alternatively, open the application and look in Help > About
    Affected if The version is 2.1.7.32 or any prior version (lower version numbers)
  3. Determine if .pm3 project files are used
    Check for .pm3 files in project directories, recent files lists, or within the application's file open dialog filters
    Affected if The user opens, imports, or works with .pm3 project files in the application

A user is affected if WebAccess HMI Designer version 2.1.7.32 or prior is installed AND the application is used to open or parse .pm3 project files

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 a release after 2.1.7.32
Interim mitigation

Avoid opening .pm3 files from untrusted or unknown sources. Update to a patched version of WebAccess HMI Designer when released by Advantech, or apply any available vendor security updates.

Fix this in Webaccess Hmi Designer Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
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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-2018-8835 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