VULNERABILITY INTELLIGENCE

CVE-2020-12521

CVSS score6.5 MEDIUM
EPSS probability0.46%
CISA KEVNot currently listed
Published2020-12-17
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • info@cert.vde.com: CWE-20
  • nvd@nist.gov: CWE-20

Primary references