CriticalCVE-2026-16438

    Mitsubishi Electric GENESIS64: Incorrect Privilege Assignment (CVE-2026-16438)

    Published Last modified Sources: CISA ICS, CVE.org

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    What is affected, what to do

    Incorrect Privilege Assignment vulnerability in Mitsubishi Electric GENESIS64 versions 10.97.3 and prior, ICONICS Suite versions 10.97.3 and prior, Hyper Historian versions 10.97.3 and prior, AnalytiX versions 10.97.3 and prior, MobileHMI 10.97.3 and prior, MC Works64 all versions, Mitsubishi Electric Iconics Digital Solutions GENESIS64 versions 10.97.3 and prior, ICONICS Suite versions 10.97.3 and prior, Hyper Historian versions 10.97.3 and prior, AnalytiX versions 10.97.3 and prior, and MobileHMI 10.97.3 and prior allows an attacker who can log in using the same administrator account for the affected products to launch and operate DCOM objects locally or remotely. During installation, the installers of the affected products unnecessarily grant default DCOM permissions to the administrator account of the affected products.

    The available sources name no fixed version. Check the vendor guidance in the references below.

    Affected
    • Mitsubishi Electric GENESIS64 eq versions 10.97.3 and prior..versions 10.97.3 and prior
    • Mitsubishi Electric Iconics Digital Solutions GENESIS64 eq versions 10.97.3 and prior..versions 10.97.3 and prior
    • Mitsubishi Electric ICONICS Suite eq versions 10.97.3 and prior..versions 10.97.3 and prior
    • Mitsubishi Electric Iconics Digital Solutions ICONICS Suite eq versions 10.97.3 and prior..versions 10.97.3 and prior
    • Mitsubishi Electric Hyper Historian eq versions 10.97.3 and prior..versions 10.97.3 and prior
    • Mitsubishi Electric Iconics Digital Solutions Hyper Historian eq versions 10.97.3 and prior..versions 10.97.3 and prior
    • Mitsubishi Electric AnalytiX eq versions 10.97.3 and prior..versions 10.97.3 and prior
    • Mitsubishi Electric Iconics Digital Solutions AnalytiX eq versions 10.97.3 and prior..versions 10.97.3 and prior
    • Mitsubishi Electric MobileHMI eq versions 10.97.3 and prior..versions 10.97.3 and prior
    • Mitsubishi Electric Iconics Digital Solutions MobileHMI eq versions 10.97.3 and prior..versions 10.97.3 and prior
    • Mitsubishi Electric MC Works64 eq all versions..all versions

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    9.4

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: Vendor (CNA), CVSS v4

    9.4

    CVSS v4

    Severity Critical on the scale from 0 to 10.

    Source: CISA ICS, CVE.org

    0.3 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 17.0

    Show all metrics
    Severity
    Critical
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    79.30 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    9.4 Methodology
    CVSS v4

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    9.4
    EPSS score

    The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.

    Read in glossary
    0.3 %
    Low — model estimates < 1% exploitation likelihood.
    EPSS percentile

    The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.

    Read in glossary
    17.0
    Elevated — this CVE ranks above at least 10% of all CVEs scored today.
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published
    CISA assessment (SSVC)
    Exploitation: none known · not automatable · Technical impact: total
    Source: CISA Vulnrichment, as of 15 October 2026
    CWE

    CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.

    Read in glossary
    CWE-266

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    Incorrect Privilege Assignment vulnerability in Mitsubishi Electric GENESIS64 versions 10.97.3 and prior, ICONICS Suite versions 10.97.3 and prior, Hyper Historian versions 10.97.3 and prior, AnalytiX versions 10.97.3 and prior, MobileHMI 10.97.3 and prior, MC Works64 all versions, Mitsubishi Electric Iconics Digital Solutions GENESIS64 versions 10.97.3 and prior, ICONICS Suite versions 10.97.3 and prior, Hyper Historian versions 10.97.3 and prior, AnalytiX versions 10.97.3 and prior, and MobileHMI 10.97.3 and prior allows an attacker who can log in using the same administrator account for the affected products to launch and operate DCOM objects locally or remotely. During installation, the installers of the affected products unnecessarily grant default DCOM permissions to the administrator account of the affected products. Users with that administrator accounts can locally or remotely launch and operate DCOM objects that should require UAC elevation. As a result, the attacker may disclose, tamper with, destroy, or delete internal information, or cause the affected system to enter a denial-of-service (DoS) condition.

    Source: cisa_ics_advisory, cvelistv5, NVD (NIST)

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    Mitsubishi Electric CorporationAnalytiX
    • versions 10.97.3 and prior
    • —
    Mitsubishi Electric CorporationGENESIS64
    • versions 10.97.3 and prior
    • —
    Mitsubishi Electric CorporationHyper Historian
    • versions 10.97.3 and prior
    • —
    Mitsubishi Electric CorporationICONICS Suite
    • versions 10.97.3 and prior
    • —
    Mitsubishi Electric CorporationMC Works64
    • all versions
    • —
    Mitsubishi Electric CorporationMobileHMI
    • versions 10.97.3 and prior
    • —
    Mitsubishi Electric Iconics Digital SolutionsAnalytiX
    • versions 10.97.3 and prior
    • —
    Mitsubishi Electric Iconics Digital SolutionsGENESIS64
    • versions 10.97.3 and prior
    • —
    Mitsubishi Electric Iconics Digital SolutionsHyper Historian
    • versions 10.97.3 and prior
    • —
    Mitsubishi Electric Iconics Digital SolutionsICONICS Suite
    • versions 10.97.3 and prior
    • —
    Mitsubishi Electric Iconics Digital SolutionsMobileHMI
    • versions 10.97.3 and prior
    • —

    Vendors and products

    Weakness classes (CWE)

    • CWE-266Incorrect Privilege Assignment

      Base

      A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

      Entry at MITRE CWE-266

    References & sources

    • mitsubishielectric.compsirt/vulnerability/pdf/2026-006_en.pdfVendor advisory
    • jvn.jpvu/JVNVUgovernment-resource
    • jvn.jpvu/JVNVU93251594government-resource
    • cisa.govnews-events/ics-advisories/icsa-26-300-02government-resource

    Changes to this CVE

    Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

    1. Record modifiedyd.mitsubishielectric.co.jp

      Show 2 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceadded
      —
      https://jvn.jp/vu/JVNVU93251594
      Referenceadded
      —
      https://www.cisa.gov/news-events/ics-advisories/icsa-26-300-02

      Source identifier: Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp

    2. Record modifiedyd.mitsubishielectric.co.jp

      1 individual change: Reference

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Referenceremoved
      https://jvn.jp/vu/JVNVU#93251594/
      —

      Source identifier: Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp

    3. Record modifiedCISA ADP

      CISA assessment (SSVC): exploitation: none known, automatable: no

      Show the original change
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      SSVC assessmentadded
      —
      {"id":"CVE-2026-16438","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"version":"2.0.3","timestamp":"2026-10-15T14:04:50.609085Z"}

      Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

    4. Receivedyd.mitsubishielectric.co.jp

      CVSS V4.0: AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

      Weakness type: CWE-266

      Description added or changed

      Show 6 original changes
      Individual changes of this event as published by NVD
      TypeActionBeforeAfter
      Descriptionadded
      —
      Incorrect Privilege Assignment vulnerability in Mitsubishi Electric GENESIS64 versions 10.97.3 and prior, ICONICS Suite versions 10.97.3 and prior, Hyper Historian versions 10.97.3 and prior, AnalytiX versions 10.97.3 and prior, MobileHMI 10.97.3 and prior, MC Works64 all versions, Mitsubishi Electric Iconics Digital Solutions GENESIS64 versions 10.97.3 and prior, ICONICS Suite versions 10.97.3 and prior, Hyper Historian versions 10.97.3 and prior, AnalytiX versions 10.97.3 and prior, and MobileHMI 10.97.3 and prior allows an attacker who can log in using the same administrator account for the affected products to launch and operate DCOM objects locally or remotely. During installation, the installers of the affected products unnecessarily grant default DCOM permissions to the administrator account of the affected products. Users with that administrator accounts can locally or remotely launch and operate DCOM objects that should require UAC elevation. As a result, the attacker may disclose, tamper with, destroy, or delete internal information, or cause the affected system to enter a denial-of-service (DoS) condition.
      CVSSadded
      —
      AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
      Weakness type (CWE)added
      —
      CWE-266
      Affected versions (publisher)added
      —
      New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/16xxx/CVE-2026-16438.json">CVE-2026-16438</a>
      Referenceadded
      —
      https://jvn.jp/vu/JVNVU#93251594/
      Referenceadded
      —
      https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-006_en.pdf

      Source identifier: Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp

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