MediumCVE-2023-4625

    Denial-of-Service（DoS） Vulnerability in Web server function on MELSEC Series CPU module (CVE-2023-4625)

    Published Sources: CISA ICS, CVE.org

    Share

    What is affected, what to do

    Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F/iQ-R Series CPU modules Web server function allows a remote unauthenticated attacker to prevent legitimate users from logging into the Web server function for a certain period after the attacker has attempted to log in illegally by continuously attempting unauthorized login to the Web server function. The impact of this vulnerability will persist while the attacker continues to attempt unauthorized login.

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

    Affected
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-32MT/ES eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-32MT/ES eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-64MT/ES eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-64MT/ES eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-80MT/ES eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-80MT/ES eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-32MR/ES eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-32MR/ES eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-64MR/ES eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-64MR/ES eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-80MR/ES eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-80MR/ES eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-32MT/DS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-32MT/DS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-64MT/DS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-64MT/DS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-80MT/DS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-80MT/DS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-32MR/DS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-32MR/DS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-64MR/DS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-64MR/DS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-80MR/DS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-80MR/DS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-32MT/ESS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-32MT/ESS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-64MT/ESS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-64MT/ESS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-80MT/ESS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-80MT/ESS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-32MT/DSS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-32MT/DSS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-64MT/DSS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-64MT/DSS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-80MT/DSS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5U-80MT/DSS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-32MT/D eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-32MT/D eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-64MT/D eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-64MT/D eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-96MT/D eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-96MT/D eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-32MT/DSS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-32MT/DSS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-64MT/DSS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-64MT/DSS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-96MT/DSS eq all versions (for serial number 17X**** and later)..all versions (for serial number 17X**** and later)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-96MT/DSS eq 1.060 or later (for serial number 179**** and prior)..1.060 or later (for serial number 179**** and prior)
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-32MT/DS-TS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-32MT/DSS-TS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UC-32MR/DS-TS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-24MT/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-40MT/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-60MT/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-24MR/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-40MR/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-60MR/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-24MT/ESS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-40MT/ESS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-60MT/ESS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-24MT/DS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-40MT/DS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-60MT/DS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-24MR/DS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-40MR/DS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-60MR/DS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-24MT/DSS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-40MT/DSS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-60MT/DSS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-24MT/ES-A eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-40MT/ES-A eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-60MT/ES-A eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-24MR/ES-A eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-40MR/ES-A eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5UJ-60MR/ES-A eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5S-30MT/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5S-40MT/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5S-60MT/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5S-80MT/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5S-30MR/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5S-40MR/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5S-60MR/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5S-80MR/ES eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5S-30MT/ESS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5S-40MT/ESS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5S-60MT/ESS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-F Series FX5S-80MT/ESS eq all versions..all versions
    • Mitsubishi Electric MELSEC iQ-R Series R00CPU eq versions 05 or later..versions 05 or later
    • Mitsubishi Electric MELSEC iQ-R Series R01CPU eq versions 05 or later..versions 05 or later
    • Mitsubishi Electric MELSEC iQ-R Series R02CPU eq versions 05 or later..versions 05 or later
    • Mitsubishi Electric MELSEC iQ-R Series R04CPU eq versions 35 or later..versions 35 or later
    • Mitsubishi Electric MELSEC iQ-R Series R08CPU eq versions 35 or later..versions 35 or later
    • Mitsubishi Electric MELSEC iQ-R Series R16CPU eq versions 35 or later..versions 35 or later
    • Mitsubishi Electric MELSEC iQ-R Series R32CPU eq versions 35 or later..versions 35 or later
    • Mitsubishi Electric MELSEC iQ-R Series R120CPU eq versions 35 or later..versions 35 or later
    • Mitsubishi Electric MELSEC iQ-R Series R04ENCPU eq versions 35 or later..versions 35 or later
    • Mitsubishi Electric MELSEC iQ-R Series R08ENCPU eq versions 35 or later..versions 35 or later
    • Mitsubishi Electric MELSEC iQ-R Series R16ENCPU eq versions 35 or later..versions 35 or later
    • Mitsubishi Electric MELSEC iQ-R Series R32ENCPU eq versions 35 or later..versions 35 or later
    • Mitsubishi Electric MELSEC iQ-R Series R120ENCPU eq versions 35 or later..versions 35 or later
    • Mitsubishi Electric MELSEC iQ-R Series R08PCPU eq versions 37 or later..versions 37 or later
    • Mitsubishi Electric MELSEC iQ-R Series R16PCPU eq versions 37 or later..versions 37 or later
    • Mitsubishi Electric MELSEC iQ-R Series R32PCPU eq versions 37 or later..versions 37 or later
    • Mitsubishi Electric MELSEC iQ-R Series R120PCPU eq versions 37 or later..versions 37 or later

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

    Metrics

    5.3

    Priority

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

    Source: NVD, CVSS v3

    5.3

    CVSS v3

    Severity Medium on the scale from 0 to 10.

    Source: CISA ICS, CVE.org

    1.3 %

    EPSS score

    Moderate — model estimates 1-10% exploitation likelihood.

    Source: FIRST EPSS, percentile 71.6

    Show all metrics
    Severity
    Medium
    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
    71.19 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
    5.3 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
    5.3
    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
    1.3 %
    Moderate — model estimates 1-10% 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
    71.6
    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 · automatable · Technical impact: partial
    Source: CISA Vulnrichment, as of 26 February 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-307

    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
    Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
    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

    Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F/iQ-R Series CPU modules Web server function allows a remote unauthenticated attacker to prevent legitimate users from logging into the Web server function for a certain period after the attacker has attempted to log in illegally by continuously attempting unauthorized login to the Web server function. The impact of this vulnerability will persist while the attacker continues to attempt unauthorized login.

    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 CorporationMELSEC iQ-F Series FX5S-30MR/ES
    • all versions
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5S-30MT/ES
    • all versions
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5S-30MT/ESS
    • all versions
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5S-40MR/ES
    • all versions
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5S-40MT/ES
    • all versions
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5S-40MT/ESS
    • all versions
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5S-60MR/ES
    • all versions
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5S-60MT/ES
    • all versions
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5S-60MT/ESS
    • all versions
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5S-80MR/ES
    • all versions
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5S-80MT/ES
    • all versions
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5S-80MT/ESS
    • all versions
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-32MR/DS
    • 1.060 or later (for serial number 179**** and prior)
    • all versions (for serial number 17X**** and later)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-32MR/ES
    • 1.060 or later (for serial number 179**** and prior)
    • all versions (for serial number 17X**** and later)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-32MT/DS
    • all versions (for serial number 17X**** and later)
    • 1.060 or later (for serial number 179**** and prior)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-32MT/DSS
    • 1.060 or later (for serial number 179**** and prior)
    • all versions (for serial number 17X**** and later)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-32MT/ES
    • all versions (for serial number 17X**** and later)
    • 1.060 or later (for serial number 179**** and prior)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-32MT/ESS
    • all versions (for serial number 17X**** and later)
    • 1.060 or later (for serial number 179**** and prior)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-64MR/DS
    • all versions (for serial number 17X**** and later)
    • 1.060 or later (for serial number 179**** and prior)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-64MR/ES
    • all versions (for serial number 17X**** and later)
    • 1.060 or later (for serial number 179**** and prior)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-64MT/DS
    • all versions (for serial number 17X**** and later)
    • 1.060 or later (for serial number 179**** and prior)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-64MT/DSS
    • 1.060 or later (for serial number 179**** and prior)
    • all versions (for serial number 17X**** and later)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-64MT/ES
    • all versions (for serial number 17X**** and later)
    • 1.060 or later (for serial number 179**** and prior)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-64MT/ESS
    • all versions (for serial number 17X**** and later)
    • 1.060 or later (for serial number 179**** and prior)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-80MR/DS
    • 1.060 or later (for serial number 179**** and prior)
    • all versions (for serial number 17X**** and later)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-80MR/ES
    • all versions (for serial number 17X**** and later)
    • 1.060 or later (for serial number 179**** and prior)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-80MT/DS
    • all versions (for serial number 17X**** and later)
    • 1.060 or later (for serial number 179**** and prior)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-80MT/DSS
    • all versions (for serial number 17X**** and later)
    • 1.060 or later (for serial number 179**** and prior)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-80MT/ES
    • all versions (for serial number 17X**** and later)
    • 1.060 or later (for serial number 179**** and prior)
    • —
    • —
    Mitsubishi Electric CorporationMELSEC iQ-F Series FX5U-80MT/ESS
    • 1.060 or later (for serial number 179**** and prior)
    • all versions (for serial number 17X**** and later)
    • —
    • —

    Vendors and products

    Affected operating systems

    Affected operating systems
    Othermitsubishielectricfx5s-30mr\/es_firmware—
    Othermitsubishielectricfx5s-30mt\/es_firmware—
    Othermitsubishielectricfx5s-30mt\/ess_firmware—
    Othermitsubishielectricfx5s-40mr\/es_firmware—
    Othermitsubishielectricfx5s-40mt\/es_firmware—
    Othermitsubishielectricfx5s-40mt\/ess_firmware—
    Othermitsubishielectricfx5s-60mr\/es_firmware—
    Othermitsubishielectricfx5s-60mt\/es_firmware—
    Othermitsubishielectricfx5s-60mt\/ess_firmware—
    Othermitsubishielectricfx5s-80mr\/es_firmware—
    Othermitsubishielectricfx5s-80mt\/es_firmware—
    Othermitsubishielectricfx5s-80mt\/ess_firmware—
    Othermitsubishielectricfx5u-32mr\/ds_firmware—
    Othermitsubishielectricfx5u-32mr\/es_firmware—
    Othermitsubishielectricfx5u-32mt\/ds_firmware—
    Othermitsubishielectricfx5u-32mt\/dss_firmware—
    Othermitsubishielectricfx5u-32mt\/es_firmware—
    Othermitsubishielectricfx5u-32mt\/ess_firmware—
    Othermitsubishielectricfx5u-64mr\/ds_firmware—
    Othermitsubishielectricfx5u-64mr\/es_firmware—
    Othermitsubishielectricfx5u-64mt\/ds_firmware—
    Othermitsubishielectricfx5u-64mt\/dss_firmware—
    Othermitsubishielectricfx5u-64mt\/es_firmware—
    Othermitsubishielectricfx5u-64mt\/ess_firmware—

    Weakness classes (CWE)

    • CWE-307Improper Restriction of Excessive Authentication Attempts

      Base

      The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.

      Entry at MITRE CWE-307

    References & sources

    • mitsubishielectric.comen/psirt/vulnerability/pdf/2023-014_en.pdfVendor advisory, Vendor advisory
    • jvn.jpvu/JVNVU94620134government-resource, Third-party advisory
    • cisa.govnews-events/ics-advisories/icsa-23-306-02government-resource, Third-party advisory, US government resource
    Embed badge

    Show the severity and KEV status of this vulnerability on your site – with a link back here. The image is updated hourly.

    Badge preview for CVE-2023-4625
    <a href="https://intel.neosec.eu/en/cve/CVE-2023-4625"><img src="https://intel.neosec.eu/badge/cve/CVE-2023-4625.svg?lang=en" alt="CVE-2023-4625 – NEOSEC Intel" height="20"></a>