VULNERABILITY INTELLIGENCE

CVE-2021-21004

CVSS score7.4 HIGH

EPSS probability0.58%

CISA KEVNot currently listed

Published2021-06-25

Last modified2026-06-17

Description

In Phoenix Contact FL SWITCH SMCS series products in multiple versions an attacker may insert malicious code via LLDP frames into the web-based management which could then be executed by the client.