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    CVE-2021-37172

    A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (V4.5.0). Affected devices fail to authenticate against configured passwords when provisioned using TIA Portal V13. This could allow an attacker using TIA Portal V13 or later versions to bypass authentication and download arbitrary programs to the PLC. The vulnerability does not occur when TIA Portal V13 SP1 or any later version was used to provision the device.

    Published:Aug 10, 2021
    Last Modified:Nov 21, 2024
    EPS:Aug 10, 2021
    EPSS Score:0.00186
    CVSS Score:7.5

    Affected Products

    Vendor
    Siemens
    Product
    Cpu 1211c
    Vendor
    Siemens
    Product
    Cpu 1212c
    Vendor
    Siemens
    Product
    Cpu 1212fc
    Vendor
    Siemens
    Product
    Cpu 1214c
    Vendor
    Siemens
    Product
    Cpu 1214fc
    Vendor
    Siemens
    Product
    Cpu 1215c
    Vendor
    Siemens
    Product
    Cpu 1215fc
    Vendor
    Siemens
    Product
    Cpu 1217c
    Vendor
    Siemens
    Product
    Simatic S7-1200 Cpu Firmware
    Vendor
    Siemens
    Product
    Simatic Step 7 \(tia Portal\)

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    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