CVE-2021-20999

CRITICAL

Weidmüller u-controls/IoT-Gateways <1.12.1 - DoS

Title source: llm

Description

In Weidmüller u-controls and IoT-Gateways in versions up to 1.12.1 a network port intended only for device-internal usage is accidentally accessible via external network interfaces. By exploiting this vulnerability the device may be manipulated or the operation may be stopped.

References (1)

[Third Party Advisory] https://cert.vde.com/en-us/advisories/vde-2021-016

Scores

CVSS v3 9.4

EPSS 0.0041

EPSS Percentile 61.2%

Attack Vector NETWORK

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

Classification

CWE

CWE-668

Status published

Affected Products (12)

weidmueller/uc20-wl2000-ac_firmware < 1.9.1

weidmueller/uc20-wl2000-ac_firmware

weidmueller/uc20-wl2000-iot_firmware < 1.9.1

weidmueller/uc20-wl2000-iot_firmware

weidmueller/iot-gw30_firmware < 1.9.1

weidmueller/iot-gw30_firmware

weidmueller/iot-gw30-4g-eu_firmware < 1.9.1

weidmueller/iot-gw30-4g-eu_firmware

Timeline

Published May 13, 2021

Tracked Since Feb 18, 2026