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    CVE-2021-21005

    In Phoenix Contact FL SWITCH SMCS series products in multiple versions if an attacker sends a hand-crafted TCP-Packet with the Urgent-Flag set and the Urgent-Pointer set to 0, the network stack will crash. The device needs to be rebooted afterwards.

    Published:Jun 25, 2021
    Last Modified:Nov 21, 2024
    EPS:Jun 25, 2021
    EPSS Score:0.00043
    CVSS Score:7.5

    Affected Products

    Vendor
    Phoenixcontact
    Product
    Fl Nat Smn 8tx
    Vendor
    Phoenixcontact
    Product
    Fl Nat Smn 8tx-m
    Vendor
    Phoenixcontact
    Product
    Fl Nat Smn 8tx-m Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Nat Smn 8tx Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 14tx\/2fx
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 14tx\/2fx-sm
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 14tx\/2fx-sm Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 14tx\/2fx Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 16tx
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 16tx Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 4tx-pn
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 4tx-pn Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 6gt\/2sfp
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 6gt\/2sfp Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 6tx\/2sfp
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 6tx\/2sfp Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 8gt
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 8gt Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 8tx
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 8tx-pn
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 8tx-pn Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smcs 8tx Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smn 6tx\/2fx
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smn 6tx\/2fx Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smn 6tx\/2fx Sm
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smn 6tx\/2fx Sm Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smn 6tx\/2pof-pn
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smn 6tx\/2pof-pn Firmware
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smn 8tx-pn
    Vendor
    Phoenixcontact
    Product
    Fl Switch Smn 8tx-pn 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