CVE-2020-12521 MEDIUM

CVE-2020-12521: 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.

Vendor Phoenix Contact
Product AXC F 1152 (1151412)
Weakness CWE-20 · Input validation
Published December 17, 2020
Last update September 17, 2024
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

December 17, 2020 CVE published
September 17, 2024 Record updated