CVE-2020-12523
Last modified
CVE-2020-12523 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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. EPSS estimates a 0.89% chance of exploitation in the next 30 days.
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
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Phoenixcontact | Tc Mguard Rs4000 4g Vzw Vpn Firmware | < 8.8.3 |
| Phoenixcontact | Tc Mguard Rs4000 4g Att Vpn Firmware | < 8.8.3 |
| Phoenixcontact | Fl Mguard Rs4004 Tx\/Dtx Firmware | < 8.8.3 |
| Phoenixcontact | Fl Mguard Rs4004 Tx\/Dtx Vpn Firmware | < 8.8.3 |
| Phoenixcontact | Tc Mguard Rs4000 3g Vpn Firmware | All versions |
| Phoenixcontact | Tc Mguard Rs4000 4g 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 | Innominate Mguard Rs4000 4tx\/3g\/Tx Vpn Firmware | < 8.8.3 |
References
- https://cert.vde.com/en-us/advisories/vde-2020-046Third Party Advisory
- https://cert.vde.com/en-us/advisories/vde-2020-046Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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