VULNERABILITY INTELLIGENCE

CVE-2021-21002

CVSS score7.5 HIGH

EPSS probability0.96%

CISA KEVNot currently listed

Published2021-06-25

Last modified2026-06-17

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

Description

In Phoenix Contact FL COMSERVER UNI in versions < 2.40 a invalid Modbus exception response can lead to a temporary denial of service.