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    CVE-2021-20598

    Overly Restrictive Account Lockout Mechanism vulnerability in Mitsubishi Electric MELSEC iQ-R series CPU modules (R08/16/32/120SFCPU all versions, R08/16/32/120PSFCPU all versions) allows a remote unauthenticated attacker to lockout a legitimate user by continuously trying login with incorrect password.

    Published:Aug 6, 2021
    Last Modified:Nov 21, 2024
    EPS:Aug 6, 2021
    EPSS Score:0.00473
    CVSS Score:5.3

    Affected Products

    Vendor
    Mitsubishielectric
    Product
    R08psfcpu
    Vendor
    Mitsubishielectric
    Product
    R08psfcpu Firmware
    Vendor
    Mitsubishielectric
    Product
    R08sfcpu
    Vendor
    Mitsubishielectric
    Product
    R08sfcpu Firmware
    Vendor
    Mitsubishielectric
    Product
    R120psfcpu
    Vendor
    Mitsubishielectric
    Product
    R120psfcpu Firmware
    Vendor
    Mitsubishielectric
    Product
    R120sfcpu
    Vendor
    Mitsubishielectric
    Product
    R120sfcpu Firmware
    Vendor
    Mitsubishielectric
    Product
    R16psfcpu
    Vendor
    Mitsubishielectric
    Product
    R16psfcpu Firmware
    Vendor
    Mitsubishielectric
    Product
    R16sfcpu
    Vendor
    Mitsubishielectric
    Product
    R16sfcpu Firmware
    Vendor
    Mitsubishielectric
    Product
    R32psfcpu
    Vendor
    Mitsubishielectric
    Product
    R32psfcpu Firmware
    Vendor
    Mitsubishielectric
    Product
    R32sfcpu
    Vendor
    Mitsubishielectric
    Product
    R32sfcpu Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    Related CVEs

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    CVE-2021-20599 (CVSS 9.1) — Cleartext Transmission of Sensitive InformationCleartext transmission of sensitive information vulnerability i…
    CVE-2021-20597 (CVSS 9.1) — Insufficiently Protected Credentials vulnerability in Mitsubishi Electric MELSEC iQ-R series Safety CPU module…
    CVE-2021-20594 (CVSS 7.5) — Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Mitsubishi Electric MELSEC iQ-R se…
    CVE-2021-20591 (CVSS 7.5) — Uncontrolled Resource Consumption vulnerability in Mitsubishi Electric MELSEC iQ-R series CPU modules (R00/01/…
    CVE-2020-5668 (CVSS 7.5) — Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series modules (R00/01/02CPU firmware version '…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High