CVE-2020-9435

Name: CVE-2020-9435
Creator: NVD / NIST
Published: 2020-03-12T14:15:21.707+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.16%

Last modified Jun 17, 2026

CVE-2020-9435 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.16% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.16%

63.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-798

Affected Software

Vendor	Product	Versions
Phoenixcontact	Tc Router 3002t-4g Firmware	<= 2.05.3
Phoenixcontact	Tc Router 2002t-3g Firmware	<= 2.05.3
Phoenixcontact	Tc Router 3002t-4g Vzw Firmware	<= 2.05.3
Phoenixcontact	Tc Router 3002t-4g Att Firmware	<= 2.05.3
Phoenixcontact	Tc Cloud Client 1002-4g Firmware	<= 2.03.17
Phoenixcontact	Tc Cloud Client 1002-Txtx Firmware	<= 1.03.17

References

http://packetstormsecurity.com/files/156729/Phoenix-Contact-TC-Router-TC-Cloud-Client-Command-Injection.htmlExploit, Third Party Advisory
http://seclists.org/fulldisclosure/2020/Mar/15Exploit, Third Party Advisory
https://cert.vde.com/en-us/advisories/Third Party Advisory
https://cert.vde.com/en-us/advisories/vde-2020-003Third Party Advisory
http://packetstormsecurity.com/files/156729/Phoenix-Contact-TC-Router-TC-Cloud-Client-Command-Injection.htmlExploit, Third Party Advisory
http://seclists.org/fulldisclosure/2020/Mar/15Exploit, Third Party Advisory
https://cert.vde.com/en-us/advisories/Third Party Advisory
https://cert.vde.com/en-us/advisories/vde-2020-003Third Party Advisory

Timeline

Published: Mar 12, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-9435?

How severe is CVE-2020-9435?

CVE-2020-9435 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.16% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9435?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-9435?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST