CVE-2021-21002

Published: Jun 25, 2021Modified: Jun 17, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

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

Products: Phoenixcontact: Fl Comserver Uni 232/422/485 Firmware, Fl Comserver Uni 232/422/485 T Firmware

2 products

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Phoenixcontact Fl Comserver Uni 232/422/485 Firmware	Before 2.40

Running on/with	Platform Versions
Phoenixcontact Fl Comserver Uni 232/422/485	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Phoenixcontact Fl Comserver Uni 232/422/485 T Firmware	Before 2.40

Running on/with	Platform Versions
Phoenixcontact Fl Comserver Uni 232/422/485 T	All versions

Source: info@cert.vde.com

Third Party Advisory

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

No history available yet.