CVE-2020-12521

published 2020-12-17

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…

Priority P4 27 medium 6.5 CVSS 3.1

AV A AC L PR N UI N S U C N I N A H

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.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
phoenix_contact	axc_f_1152	>= unspecified < 2021.0 LTS	2021.0 LTS
phoenix_contact	axc_f_2152	>= unspecified < 2021.0 LTS	2021.0 LTS
phoenix_contact	axc_f_2152_starterkit	>= unspecified < 2021.0 LTS	2021.0 LTS
phoenix_contact	axc_f_3152	>= unspecified < 2021.0 LTS	2021.0 LTS
phoenix_contact	plcnext_technology_starterkit	>= unspecified < 2021.0 LTS	2021.0 LTS
phoenix_contact	rfc_4072s_1051328	>= unspecified < 2021.0 LTS	2021.0 LTS
phoenixcontact	plcnext_firmware	< 2021.0	2021.0

CVSS provenance

nvd v3.1 6.5 MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v2.0 6.1 MEDIUM AV:A/AC:L/Au:N/C:N/I:N/A:C

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-20