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    CVE-2023-49621

    A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The "intermediate installation" system state of the affected application uses default credential with admin privileges. An attacker could use the credentials to gain complete control of the affected device.

    Published:Jan 9, 2024
    Last Modified:Dec 16, 2025
    EPS:Jan 9, 2024
    EPSS Score:0.00151
    CVSS Score:9.8

    Affected Products

    Vendor
    Siemens
    Product
    Simatic Cn 4100
    Vendor
    Siemens
    Product
    Simatic Cn 4100 Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-1392 Use of Default Credentials

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2025-40940 (CVSS 6.9) — A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application exhib…
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    CVE-2025-40937 (CVSS 8.7) — A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application do no…
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    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