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    CVE-2021-21002

    In Phoenix Contact FL COMSERVER UNI in versions < 2.40 a invalid Modbus exception response can lead to a temporary denial of service.

    Published:Jun 25, 2021
    Last Modified:Nov 21, 2024
    EPS:Jun 25, 2021
    EPSS Score:0.00334
    CVSS Score:7.5

    Affected Products

    Vendor
    Phoenixcontact
    Product
    Fl Comserver Uni 232\/422\/485
    Vendor
    Phoenixcontact
    Product
    Fl Comserver Uni 232\/422\/485-t
    Vendor
    Phoenixcontact
    Product
    Fl Comserver Uni 232\/422\/485-t Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Comserver Uni 232\/422\/485 Firmware

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-469 HTTP DoS

    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