dbcve.org
Web StudioApplication · Indusoft

CVE-2018-8840

CRITICAL · 9.8 CVSS v3.0 Published 2018-04-18
Fix available
A fix is available. Upgrade to after 8.1 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
A remote attacker could send a carefully crafted packet in InduSoft Web Studio v8.1 and prior versions, and/or InTouch Machine Edition 2017 v8.1 and prior versions during a tag, alarm, or event related action such as read and write, which 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 remote code execution vulnerability exists in InduSoft Web Studio v8.1 and prior and InTouch Machine Edition 2017 v8.1 and prior. The vulnerability is triggered when a remote attacker sends a specially crafted packet during tag, alarm, or event-related read/write operations, potentially allowing arbitrary code execution on the affected system.

MitigationApply vendor patches or upgrade to newer versions of InduSoft Web Studio and InTouch Machine Edition beyond v8.1. Consider network segmentation and restricting access to the affected software's network interfaces as an interim control.

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
Web StudioApplication
Affected:<= 8.1
Intouch Machine Edition 2017Application
Affected:<= 8.1

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 InduSoft Web Studio installation and version
    Check the Windows Programs and Features list or look for InduSoft Web Studio in the installed programs. Locate the software's executable (typically in Program Files\InduSoft\Web Studio v8.1 or similar path) and check its file properties for version information.
    Affected if The installed version is 8.1 or lower (8.1, 8.0, 7.x, etc.)
  2. Identify InTouch Machine Edition 2017 installation and version
    Check the Windows Programs and Features list or look for Intouch Machine Edition 2017 in the installed programs. Locate the software's executable and check its file properties for version information.
    Affected if The installed version is 8.1 or lower for the 2017 release (8.1, 8.0, 7.x, etc.)
  3. Determine network exposure of the affected software
    Use netstat or a network port scanner to identify which ports the InduSoft or InTouch software is listening on. Common ports for this software include TCP 1234, 12345, or other configured ports. Check firewall rules to determine if these ports are accessible from outside the local network.
    Affected if The software is listening on network-accessible ports and those ports are reachable from untrusted networks or the internet
  4. Verify if the runtime or service is active
    Check Windows Task Manager or services list for running processes related to InduSoft Web Studio or InTouch Machine Edition (such as Runtime, BackgroundTask, or related services). Use 'tasklist' or 'sc query' commands to enumerate running services.
    Affected if The affected software runtime or service is actively running and processing remote connections

You are affected if either InduSoft Web Studio or InTouch Machine Edition 2017 is installed at version 8.1 or lower AND the software is exposed to network connections that could receive specially crafted packets during tag, alarm, or event operations.

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 a release after 8.1
Interim mitigation

Apply vendor patches or upgrade to newer versions of InduSoft Web Studio and InTouch Machine Edition beyond v8.1. Consider network segmentation and restricting access to the affected software's network interfaces as an interim control.

Recommended fix Moderate confidence

InduSoft Web Studio v8.1 SP1 and InTouch Machine Edition 2017 v8.1 SP1 (or later)

  1. Download InduSoft Web Studio v8.1 SP1 or later from the Schneider Electric software portal
  2. Download InTouch Machine Edition 2017 v8.1 SP1 or later from the Schneider Electric software portal
  3. Apply the update in a test environment first to validate system compatibility
  4. Deploy the update to production systems following change management procedures
  5. Verify the patch was applied successfully by checking the software version

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

Fix this in Web Studio Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing12.0 h
  • Review / QA4.0 h
28.0 hours of engineering $4,760
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,616.

Scan for this in your stack

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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-2018-8840 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