CriticalCVE-2020-14496

    Mitsubishi Electric CPU Module Logging Configuration Tool: Permission Issues (CVE-2020-14496)

    Published Sources: CVE.org

    What is affected, what to do

    Successful exploitation of this vulnerability for multiple Mitsubishi Electric Factory Automation Engineering Software Products of various versions could allow an attacker to escalate privilege and execute malicious programs, which could cause a denial-of-service condition, and allow information to be disclosed, tampered with, and/or destroyed.

    Update cpu_module_logging_configuration_tool to version 1.106k, cw_configurator to version 1.011m, data_transfer to version 3.41t.

    Affected
    • Mitsubishi Electric CPU Module Logging Configuration Tool lte All..1.100E
    • Mitsubishi Electric CW Configurator lte All..1.010L
    • Mitsubishi Electric Data Transfer lte All..3.40S
    • Mitsubishi Electric EZSocket lte All..4.5
    • Mitsubishi Electric FR Configurator2 lte All..1.22Y
    • Mitsubishi Electric GT Designer3 Version1 (GOT2000) lte All..1.235V
    • Mitsubishi Electric GT SoftGOT1000 Version3 lte All..3.200J
    • Mitsubishi Electric GT SoftGOT2000 Version1 lte All..1.235V
    • Mitsubishi Electric GX LogViewer lte All..1.100E
    • Mitsubishi Electric GX Works2 lte All..1.592S
    • Mitsubishi Electric GX Works3 lte All..1.063R
    • Mitsubishi Electric M_CommDTM-HART eq All 1.00A..All 1.00A
    • Mitsubishi Electric MELFA-Works lte All..4.3
    • Mitsubishi Electric MELSOFT EM Software Development Kit (EM Configurator) lte All..1.010L
    • Mitsubishi Electric MELSOFT FieldDeviceConfigurator lte All..1.03D
    • Mitsubishi Electric MELSOFT Navigator lte All..2.62Q
    • Mitsubishi Electric MH11 SettingTool Version2 lte All..2.002C
    • Mitsubishi Electric Motorizer lte All..1.005F
    • Mitsubishi Electric MR Configurator2 lte All..1.105K
    • Mitsubishi Electric MT Works2 lte All..1.156N
    • Mitsubishi Electric MX Component lte All..4.19V
    • Mitsubishi Electric PX Developer lte All..1.52E
    • Mitsubishi Electric RT ToolBox2 lte All..3.72A
    • Mitsubishi Electric RT ToolBox3 lte All..1.70Y

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

    Metrics

    9.8

    Priority

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

    Source: NVD, CVSS v3

    8.3

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: CVE.org

    0.9 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 58.7

    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
    69.92 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
    9.8 Methodology
    CVSS v3

    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
    8.3
    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
    0.9 %
    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
    58.7
    High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
    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 16 April 2025
    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-275

    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

    Successful exploitation of this vulnerability for multiple Mitsubishi Electric Factory Automation Engineering Software Products of various versions could allow an attacker to escalate privilege and execute malicious programs, which could cause a denial-of-service condition, and allow information to be disclosed, tampered with, and/or destroyed.

    Source: NVD (NIST), cvelistv5

    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 ElectricCPU Module Logging Configuration Tool
    • All – ≤ 1.100E
    • —
    Mitsubishi ElectricCW Configurator
    • All – ≤ 1.010L
    • —
    Mitsubishi ElectricData Transfer
    • All – ≤ 3.40S
    • —
    Mitsubishi ElectricEZSocket
    • All – ≤ 4.5
    • —
    Mitsubishi ElectricFR Configurator2
    • All – ≤ 1.22Y
    • —
    Mitsubishi ElectricGT Designer3 Version1 (GOT2000)
    • All – ≤ 1.235V
    • —
    Mitsubishi ElectricGT SoftGOT1000 Version3
    • All – ≤ 3.200J
    • —
    Mitsubishi ElectricGT SoftGOT2000 Version1
    • All – ≤ 1.235V
    • —
    Mitsubishi ElectricGX LogViewer
    • All – ≤ 1.100E
    • —
    Mitsubishi ElectricGX Works2
    • All – ≤ 1.592S
    • —
    Mitsubishi ElectricGX Works3
    • All – ≤ 1.063R
    • —
    Mitsubishi ElectricM_CommDTM-HART
    • All 1.00A
    • —
    Mitsubishi ElectricMELFA-Works
    • All – ≤ 4.3
    • —
    Mitsubishi ElectricMELSOFT EM Software Development Kit (EM Configurator)
    • All – ≤ 1.010L
    • —
    Mitsubishi ElectricMELSOFT FieldDeviceConfigurator
    • All – ≤ 1.03D
    • —
    Mitsubishi ElectricMELSOFT Navigator
    • All – ≤ 2.62Q
    • —
    Mitsubishi ElectricMH11 SettingTool Version2
    • All – ≤ 2.002C
    • —
    Mitsubishi ElectricMotorizer
    • All – ≤ 1.005F
    • —
    Mitsubishi ElectricMR Configurator2
    • All – ≤ 1.105K
    • —
    Mitsubishi ElectricMT Works2
    • All – ≤ 1.156N
    • —
    Mitsubishi ElectricMX Component
    • All – ≤ 4.19V
    • —
    Mitsubishi ElectricPX Developer
    • All – ≤ 1.52E
    • —
    Mitsubishi ElectricRT ToolBox2
    • All – ≤ 3.72A
    • —
    Mitsubishi ElectricRT ToolBox3
    • All – ≤ 1.70Y
    • —
    mitsubishielectriccpu_module_logging_configuration_tool
    • < 1.106k
    • 1.106k
    mitsubishielectriccw_configurator
    • < 1.011m
    • 1.011m
    mitsubishielectricdata_transfer
    • < 3.41t
    • 3.41t
    mitsubishielectricem_configurator
    • < 1.015r
    • 1.015r
    mitsubishielectricezsocket
    • < 4.6
    • 4.6
    mitsubishielectricfr_configurator2
    • < 1.23z
    • 1.23z
    mitsubishielectricgt_designer3
    • < 1.236w
    • 1.236w
    mitsubishielectricgt_softgot1000
    • < 3.245f
    • 3.245f
    mitsubishielectricgt_softgot2000
    • < 1.236w
    • 1.236w
    mitsubishielectricgx_logviewer
    • < 1.106k
    • 1.106k
    mitsubishielectricgx_works2
    • < 1.595v
    • 1.595v
    mitsubishielectricgx_works3
    • < 1.065t
    • 1.065t
    mitsubishielectricm_commdtm-hart
    • < 1.01b
    • 1.01b
    mitsubishielectricm_commdtm-io-link
    • < 1.04e
    • 1.04e
    mitsubishielectricmelfa-works
    • < 4.4
    • 4.4
    mitsubishielectricmelsoft_fielddeviceconfigurator
    • < 1.04e
    • 1.04e
    mitsubishielectricmelsoft_navigator
    • < 2.70y
    • 2.70y
    mitsubishielectricmh11_settingtool_version2
    • < 2.003d
    • 2.003d
    mitsubishielectricmotorizer
    • < 1.010l
    • 1.010l
    mitsubishielectricmr_configurator2
    • < 1.106l
    • 1.106l
    mitsubishielectricmt_works2
    • < 1.160s
    • 1.160s
    mitsubishielectricmx_component
    • < 4.20w
    • 4.20w
    mitsubishielectricnetwork_interface_board_cc-link_ver.2_utility
    • < 1.24a
    • 1.24a
    mitsubishielectricnetwork_interface_board_cc_ie_control_utility
    • < 1.30g
    • 1.30g

    Vendors and products

    Weakness classes (CWE)

    References & sources

    • cisa.govuscert/ics/advisories/icsa-20-212-02x_refsource_MISC, Third-party advisory, US government resource
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    <a href="https://intel.neosec.eu/en/cve/CVE-2020-14496"><img src="https://intel.neosec.eu/badge/cve/CVE-2020-14496.svg?lang=en" alt="CVE-2020-14496 – NEOSEC Intel" height="20"></a>