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    CVE-2020-15783

    A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC TDC CPU555 (All versions), SINUMERIK 840D sl (All versions). Sending multiple specially crafted packets to the affected devices could cause a Denial-of-Service on port 102. A cold restart is required to recover the service.

    Published:Nov 12, 2020
    Last Modified:Jun 2, 2026
    EPS:Nov 12, 2020
    EPSS Score:0.0019
    CVSS Score:7.5

    Affected Products

    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 312
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 312 Firmware
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 314
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 314 Firmware
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 315-2 Dp
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 315-2 Dp Firmware
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 315-2 Pn
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 315-2 Pn Firmware
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 315f-2 Dp
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 315f-2 Dp Firmware
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 315f-2 Pn
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 315f-2 Pn Firmware
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 317-2 Dp
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 317-2 Dp Firmware
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 317-2 Pn
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 317-2 Pn Firmware
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 317f-2 Dp
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 317f-2 Dp Firmware
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 317f-2 Pn
    Vendor
    Siemens
    Product
    Simatic S7-300 Cpu 317f-2 Pn Firmware
    Vendor
    Siemens
    Product
    Simatic Tdc Cpu555
    Vendor
    Siemens
    Product
    Simatic Tdc Cpu555 Firmware
    Vendor
    Siemens
    Product
    Sinumerik 840d Sl
    Vendor
    Siemens
    Product
    Sinumerik 840d Sl Firmware

    Exploits

    No exploit reference

    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