HighCVE-2023-0525

    Mitsubishi Electric GOT2000 Series GT27 model: Weak Encoding for Password (CVE-2023-0525)

    Published Sources: CISA ICS, CVE.org

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    What is affected, what to do

    Weak Encoding for Password vulnerability in Mitsubishi Electric Corporation GOT2000 Series GT27 model versions 01.49.000 and prior, GT25 model versions 01.49.000 and prior, GT23 model versions 01.49.000 and prior, GT21 model versions 01.49.000 and prior, GOT SIMPLE Series GS25 model versions 01.49.000 and prior, GS21 model versions 01.49.000 and prior, GT Designer3 Version1 (GOT2000) versions 1.295H and prior and GT SoftGOT2000 versions 1.295H and prior allows a remote unauthenticated attacker to obtain plaintext passwords by sniffing packets containing encrypted passwords and decrypting the encrypted passwords, in the case of transferring data with GT Designer3 Version1(GOT2000) and GOT2000 Series or GOT SIMPLE Series with the Data Transfer Security function enabled, or in the case of transferring data by the SoftGOT-GOT link function with GT SoftGOT2000 and GOT2000 series with the Data Transfer Security function enabled.

    Update gt_designer3 to version 1.300n, gt_softgot2000 to version 1.300n.

    Affected
    • Mitsubishi Electric GOT2000 Series GT27 model eq 01.49.000 and prior..01.49.000 and prior
    • Mitsubishi Electric GOT2000 Series GT25 model eq 01.49.000 and prior..01.49.000 and prior
    • Mitsubishi Electric GOT2000 Series GT23 model eq 01.49.000 and prior..01.49.000 and prior
    • Mitsubishi Electric GOT2000 Series GT21 model eq 01.49.000 and prior..01.49.000 and prior
    • Mitsubishi Electric GOT SIMPLE Series GS25 model eq 01.49.000 and prior..01.49.000 and prior
    • Mitsubishi Electric GOT SIMPLE Series GS21 model eq 01.49.000 and prior..01.49.000 and prior
    • Mitsubishi Electric GT Designer3 Version1 (GOT2000) eq 1.295H and prior..1.295H and prior
    • Mitsubishi Electric GT SoftGOT2000 eq 1.295H and prior..1.295H and prior

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

    Metrics

    7.5

    Priority

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

    Source: NVD, CVSS v3

    7.5

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: CISA ICS, CVE.org

    0.7 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 52.5

    Show all metrics
    Severity
    High
    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
    62.71 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
    7.5 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
    7.5
    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
    0.7 %
    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
    52.5
    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: partial
    Source: CISA Vulnrichment, as of 18 October 2024
    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-261

    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

    Weak Encoding for Password vulnerability in Mitsubishi Electric Corporation GOT2000 Series GT27 model versions 01.49.000 and prior, GT25 model versions 01.49.000 and prior, GT23 model versions 01.49.000 and prior, GT21 model versions 01.49.000 and prior, GOT SIMPLE Series GS25 model versions 01.49.000 and prior, GS21 model versions 01.49.000 and prior, GT Designer3 Version1 (GOT2000) versions 1.295H and prior and GT SoftGOT2000 versions 1.295H and prior allows a remote unauthenticated attacker to obtain plaintext passwords by sniffing packets containing encrypted passwords and decrypting the encrypted passwords, in the case of transferring data with GT Designer3 Version1(GOT2000) and GOT2000 Series or GOT SIMPLE Series with the Data Transfer Security function enabled, or in the case of transferring data by the SoftGOT-GOT link function with GT SoftGOT2000 and GOT2000 series with the Data Transfer Security function enabled.

    Source: cisa_ics_advisory, 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 Electric CorporationGOT SIMPLE Series GS21 model
    • 01.49.000 and prior
    • —
    Mitsubishi Electric CorporationGOT SIMPLE Series GS25 model
    • 01.49.000 and prior
    • —
    Mitsubishi Electric CorporationGOT2000 Series GT21 model
    • 01.49.000 and prior
    • —
    Mitsubishi Electric CorporationGOT2000 Series GT23 model
    • 01.49.000 and prior
    • —
    Mitsubishi Electric CorporationGOT2000 Series GT25 model
    • 01.49.000 and prior
    • —
    Mitsubishi Electric CorporationGOT2000 Series GT27 model
    • 01.49.000 and prior
    • —
    Mitsubishi Electric CorporationGT Designer3 Version1 (GOT2000)
    • 1.295H and prior
    • —
    Mitsubishi Electric CorporationGT SoftGOT2000
    • 1.295H and prior
    • —
    mitsubishielectricgt_designer3
    • < 1.300n
    • 1.300n
    mitsubishielectricgt_softgot2000
    • < 1.300n
    • 1.300n

    Vendors and products

    Affected operating systems

    Affected operating systems
    Othermitsubishielectricgs21_firmware—
    Othermitsubishielectricgs25_firmware—
    Othermitsubishielectricgt21_firmware—
    Othermitsubishielectricgt23_firmware—
    Othermitsubishielectricgt25_firmware—
    Othermitsubishielectricgt27_firmware—

    Weakness classes (CWE)

    • CWE-261Weak Encoding for Password

      Base

      Obscuring a password with a trivial encoding does not protect the password.

      Entry at MITRE CWE-261

    References & sources

    • mitsubishielectric.comen/psirt/vulnerability/pdf/2023-008_en.pdfVendor advisory
    • jvn.jpvu/JVNVU95285923/index.htmlThird-party advisory
    • cisa.govnews-events/ics-advisories/icsa-23-215-02Third-party advisory, US government resource
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