CVE-2020-9435: Phoenixcontact Tc Cloud Client 1002-4g Firmware

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

PHOENIX CONTACT TC ROUTER 3002T-4G through 2.05.3, TC ROUTER 2002T-3G through 2.05.3, TC ROUTER 3002T-4G VZW through 2.05.3, TC ROUTER 3002T-4G ATT through 2.05.3, TC CLOUD CLIENT 1002-4G through 2.03.17, and TC CLOUD CLIENT 1002-TXTX through 1.03.17 devices contain a hardcoded certificate (and key) that is used by default for web-based services on the device. Impersonation, man-in-the-middle, or passive decryption attacks are possible if the generic certificate is not replaced by a device-specific certificate during installation.

Affected products

• Phoenixcontact Tc Cloud Client 1002-4g Firmware: up to and including 2.03.17
• Phoenixcontact Tc Cloud Client 1002-Txtx Firmware: up to and including 1.03.17
• Phoenixcontact Tc Router 2002t-3g Firmware: up to and including 2.05.3
• Phoenixcontact Tc Router 3002t-4g Att Firmware: up to and including 2.05.3
• Phoenixcontact Tc Router 3002t-4g Firmware: up to and including 2.05.3
• Phoenixcontact Tc Router 3002t-4g Vzw Firmware: up to and including 2.05.3

Published 2020-03-12. Last modified 2026-06-17.