CVE-2021-21002

Denial of Service in Phoenix Contact FL COMSERVER UNI products

State: Published
Severity: 7.5 High
Published: Jun 25, 2021
Updated: Sep 17, 2024
Reserved: Dec 17, 2020

Description

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

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CERTVDE

Weaknesses

CWE-772 Missing Release of Resource after Effective Lifetime

Affected Products

Product	Versions
FL COMSERVERPhoenix Contact	UNI 232/422/485 (2313452) to before 2.40Affected UNI 232/422/485-T (2904817) to before 2.40Affected

References

https://cert.vde.com/en-us/advisories/vde-2021-022

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