Vulnerability Monitor

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CVE-2020-12521

On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS a specially crafted LLDP packet may lead to a high system load in the PROFINET stack. An attacker can cause failure of system services or a complete reboot.

Published

2020-12-17T23:15:13.137

Last Modified

2024-11-21T04:59:51.477

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:A/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: ADJACENT_NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

6.5

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-20
  • Type: Primary
    CWE-20
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System phoenixcontact plcnext_firmware < 2021.0 Yes
Hardware phoenixcontact axc_f_1152 - No
Operating System phoenixcontact plcnext_firmware < 2021.0 Yes
Hardware phoenixcontact axc_f_2152 - No
Operating System phoenixcontact plcnext_firmware < 2021.0 Yes
Hardware phoenixcontact axc_f_3152 - No
Operating System phoenixcontact plcnext_firmware < 2021.0 Yes
Hardware phoenixcontact rfc_4072s - No
Operating System phoenixcontact plcnext_firmware < 2021.0 Yes
Hardware phoenixcontact axc_f_2152_starterkit - No
Operating System phoenixcontact plcnext_firmware < 2021.0 Yes
Hardware phoenixcontact plcnext_technology_starterkit - No
References