CVE-2021-21002

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

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

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-772

Affected software

No affected versions have been published.

Timeline

Published
Jun 25, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-21002: High severity, CVSS 7.5 | Vulnix