dbcve.org
Mc WorksApplication · Mitsubishielectric

CVE-2020-12015

HIGH · 7.5 CVSS v3.1 Published 2020-07-16
Fix available
A fix is available. Upgrade to after 10.95.208.31 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
A specially crafted communication packet sent to the affected systems could cause a denial-of-service condition due to improper deserialization. This issue affects: Mitsubishi Electric MC Works64 version 4.02C (10.95.208.31) and earlier, all versions; Mitsubishi Electric MC Works32 version 3.00A (9.50.255.02); ICONICS GenBroker64, Platform Services, Workbench, FrameWorX Server version 10.96 and prior; ICONICS GenBroker32 version 9.5 and prior.

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

Improper deserialization vulnerability in MC Works and ICONICS GenBroker allows remote attackers to send specially crafted communication packets that cause a denial-of-service condition. The flaw exists in the deserialization handling of network communication in affected versions.

MitigationApply vendor-provided patches for MC Works64 (version 4.02C+), MC Works32 (version 3.00A+), and ICONICS products (version 10.96+ for 64-bit, version 9.5+ for 32-bit). Consider network segmentation to limit exposure to untrusted networks.

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
Mc WorksApplication
Affected:<= 10.95.208.31
Mc Works32Application
Affected:= 9.50.255.02
Energy AnalytixApplication
Affected:all versions
Facility AnalytixApplication
Affected:all versions
Genesis64Application
Affected:all versions
Hyper HistorianApplication
Affected:all versions
MobilehmiApplication
Affected:all versions
Quality AnalytixApplication
Affected:all versions

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:3.1/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. Identify installed MC Works version
    Check the installed version of Mitsubishi Electric MC Works or MC Works32 through Windows Programs and Features, the application help menu, or the product's About dialog. Look for version information in the installation directory or registry under the product's uninstall entry.
    Affected if The installed version is MC Works <= 10.95.208.31 or MC Works32 = 9.50.255.02
  2. Identify installed ICONICS products
    Enumerate installed ICONICS software including Energy Analytix, Facility Analytix, Genesis64, Hyper Historian, MobileHMI, and Quality Analytix through Windows Programs and Features or by checking the ICONICS installation directory.
    Affected if Any of the listed ICONICS products are installed regardless of version (all versions affected)
  3. Verify GenBroker service status
    Check if the GenBroker service is running on the system. On Windows, use Services.msc or run 'sc query GenBroker' from an elevated command prompt. Also check for the GenBroker.exe process in Task Manager.
    Affected if The GenBroker service is running and exposed to network communication, as the vulnerability exists in its deserialization handling of network packets
  4. Check network exposure of affected services
    Review firewall rules and network configuration to determine if GenBroker or the affected SCADA/HMI services are listening on network ports and accessible from untrusted networks. Check for open ports typically used by these products.
    Affected if GenBroker or affected products are listening on network ports and accessible from untrusted or external networks, enabling remote attackers to send malicious packets
  5. Compare installed versions against affected ranges
    Document the exact version numbers of all installed Mitsubishi Electric and ICONICS products and compare them against the CVE-affected version ranges: MC Works <= 10.95.208.31, MC Works32 = 9.50.255.02, and all versions of ICONICS products.
    Affected if Any installed version falls within or matches the affected version ranges, indicating potential exposure to the deserialization vulnerability

The environment is affected if any MC Works version <= 10.95.208.31 or MC Works32 version 9.50.255.02 is installed, or if any ICONICS product (Energy Analytix, Facility Analytix, Genesis64, Hyper Historian, MobileHMI, or Quality Analytix) is installed, and the GenBroker service handling their network communication is network-accessible.

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 10.95.208.31
Interim mitigation

Apply vendor-provided patches for MC Works64 (version 4.02C+), MC Works32 (version 3.00A+), and ICONICS products (version 10.96+ for 64-bit, version 9.5+ for 32-bit). Consider network segmentation to limit exposure to untrusted networks.

Fix this in Mc Works 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
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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-2020-12015 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