CVE-2020-12523

MEDIUM

Phoenix Contact mGuard Devices <8.8.3 - Info Disclosure

Title source: llm

Description

On Phoenix Contact mGuard Devices versions before 8.8.3 LAN ports get functional after reboot even if they are disabled in the device configuration. For mGuard devices with integrated switch on the LAN side, single switch ports can be disabled by device configuration. After a reboot these ports get functional independent from their configuration setting: Missing Initialization of Resource

References (1)

[Third Party Advisory] https://cert.vde.com/en-us/advisories/vde-2020-046

Scores

CVSS v3 5.4

EPSS 0.0038

EPSS Percentile 59.4%

Attack Vector NETWORK

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

Details

CWE

CWE-909

Status published

Products (9)

phoenixcontact/fl_mguard_rs4004_tx\/dtx_firmware < 8.8.3

phoenixcontact/fl_mguard_rs4004_tx\/dtx_vpn_firmware < 8.8.3

phoenixcontact/innominate_mguard_rs4000_4tx\/3g\/tx_vpn_firmware < 8.8.3

phoenixcontact/innominate_mguard_rs4000_4tx\/tx_firmware < 8.8.3

phoenixcontact/innominate_mguard_rs4000_4tx\/tx_vpn_firmware < 8.8.3

phoenixcontact/tc_mguard_rs4000_3g_vpn_firmware

phoenixcontact/tc_mguard_rs4000_4g_att_vpn_firmware < 8.8.3

phoenixcontact/tc_mguard_rs4000_4g_vpn_firmware < 8.8.3

phoenixcontact/tc_mguard_rs4000_4g_vzw_vpn_firmware < 8.8.3

Published Dec 17, 2020

Tracked Since Feb 18, 2026