Summary
A code injection vulnerability at the upload-config endpoint in the firmware of TC ROUTER and CLOUD CLIENT Industrial Mobile network routers has been discovered that can be exploited by an high privileged attacker.
Impact
The vulnerability can lead to a total loss of confidentiality, integrity and availability of the devices.
Affected Product(s)
| Model no. | Product name | Affected versions |
|---|---|---|
| 1221706 | CLOUD CLIENT 1101T-TX/TX | Firmware <FW 3.07.7 |
| 2702888 | TC CLOUD CLIENT 1002-4G ATT | Firmware <FW 3.08.8 |
| 2702885 | TC CLOUD CLIENT 1002-TX/TX | Firmware <FW 3.07.7 |
| 2702531 | TC ROUTER 2002T-3G | Firmware <FW 3.08.8 |
| 2702530 | TC ROUTER 2002T-4G | Firmware <FW 3.08.8 |
| 2702529 | TC ROUTER 3002T-3G | Firmware <FW 3.08.8 |
| 2702528 | TC ROUTER 3002T-4G | Firmware <FW 3.08.8 |
| 2702533 | TC ROUTER 3002T-4G ATT | Firmware <FW 3.08.8 |
| 1632697 | TC ROUTER 3002T-4G GL | Firmware <FW 3.08.8 |
| 2702532 | TC ROUTER 3002T-4G VZW | Firmware <FW 3.08.8 |
| 1439475 | TC ROUTER 5004T-5G EU | Firmware <FW 1.06.23 |
Vulnerabilities
Expand / Collapse allAn unauthenticated remote attacker can trick a high privileged user into uploading a malicious payload via the config-upload endpoint, leading to code injection as root. This results in a total loss of confidentiality, availability and integrity due to improper control of code generation ('Code Injection’).
Mitigation
As this vulnerability can only be exploited by an authenticated high privileged user, Phoenix Contact recommends to strictly restrict administrative access to the device. The administrative use shall only import configuration files from trusted sources.
Remediation
Phoenix Contact recommends to upgrade to the latest firmware which will fix this vulnerability.
| Product | Fixed Version |
|---|---|
| TC ROUTER 3002T-3G | 3.08.8 |
| TC ROUTER 2002T-3G | 3.08.8 |
| TC ROUTER 3002T-4G | 3.08.8 |
| TC ROUTER 3002T-4G GL | 3.08.8 |
| TC ROUTER 5004T-5G EU | 1.06.23 |
| TC ROUTER 3002T-4G VZW | 3.08.8 |
| TC ROUTER 3002T-4G ATT | 3.08.8 |
| TC ROUTER 2002T-4G | 3.08.8 |
| CLOUD CLIENT 1101T-TX/TX | 3.07.7 |
| TC CLOUD CLIENT 1002-4G ATT | 3.08.8 |
| TC CLOUD CLIENT 1002-TX/TX | 3.07.7 |
Acknowledgments
Phoenix Contact GmbH & Co. KG thanks the following parties for their efforts:
- CERTVDE for Coordination (see https://certvde.com/en/ )
- D. Blagojevic, S. Dietz, F. Koroknai, T. Weber from CyberDanube for Reporting.
Revision History
| Version | Date | Summary |
|---|---|---|
| 1.0.0 | 13.01.2026 09:00 | Initial Revision |