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    CVE-2020-27632

    In SIMATIC MV400 family versions prior to v7.0.6, the ISN generator is initialized with a constant value and has constant increments. An attacker could predict and hijack TCP sessions.

    Published:Mar 10, 2021
    Last Modified:Nov 21, 2024
    EPS:Mar 10, 2021
    EPSS Score:0.00379
    CVSS Score:7.5

    Affected Products

    Vendor
    Siemens
    Product
    Simatic Mv420
    Vendor
    Siemens
    Product
    Simatic Mv420 Firmware
    Vendor
    Siemens
    Product
    Simatic Mv440
    Vendor
    Siemens
    Product
    Simatic Mv440 Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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