7.5
HIGH
CVE-2020-7491
"Tricon TCM Unsecured Legacy Debug Port"
Description

**VERSION NOT SUPPORTED WHEN ASSIGNED** A legacy debug port account in TCMs installed in Tricon system versions 10.2.0 through 10.5.3 is visible on the network and could allow inappropriate access. This vulnerability was remediated in TCM version 10.5.4.

INFO

Published Date :

July 23, 2020, 9:15 p.m.

Last Modified :

Nov. 21, 2024, 5:37 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2020-7491 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Schneider-electric tricon_tcm_4351_firmware
2 Schneider-electric tricon_tcm_4352_firmware
3 Schneider-electric tricon_tcm_4351a_firmware
4 Schneider-electric tricon_tcm_4351b_firmware
5 Schneider-electric tricon_tcm_4352a_firmware
6 Schneider-electric tricon_tcm_4352b_firmware
7 Schneider-electric tristation_1131_firmware
8 Schneider-electric tricon_tcm_4351
9 Schneider-electric tricon_tcm_4352
10 Schneider-electric tricon_tcm_4351a
11 Schneider-electric tricon_tcm_4351b
12 Schneider-electric tricon_tcm_4352a
13 Schneider-electric tricon_tcm_4352b
14 Schneider-electric tristation_1131
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-7491.

URL Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-205-01 Third Party Advisory US Government Resource
https://www.se.com/ww/en/download/document/SESB-2020-105-01/ Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-205-01 Third Party Advisory US Government Resource
https://www.se.com/ww/en/download/document/SESB-2020-105-01/ Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-7491 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-7491 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://us-cert.cisa.gov/ics/advisories/icsa-20-205-01
    Added Reference https://www.se.com/ww/en/download/document/SESB-2020-105-01/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Apr. 27, 2022

    Action Type Old Value New Value
    Changed Reference Type https://us-cert.cisa.gov/ics/advisories/icsa-20-205-01 No Types Assigned https://us-cert.cisa.gov/ics/advisories/icsa-20-205-01 Third Party Advisory, US Government Resource
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tristation_1131_firmware:*:*:*:*:*:*:*:* versions from (including) 1.0.0 up to (including) 4.9.0 *cpe:2.3:o:schneider-electric:tristation_1131_firmware:*:*:*:*:*:*:*:* versions from (including) 4.10.0 up to (including) 4.12.0 OR cpe:2.3:h:schneider-electric:tristation_1131:-:*:*:*:*:*:*:*
  • CWE Remap by [email protected]

    Jul. 21, 2021

    Action Type Old Value New Value
    Changed CWE CWE-200 NVD-CWE-noinfo
  • CVE Modified by [email protected]

    Jul. 30, 2020

    Action Type Old Value New Value
    Added Reference https://us-cert.cisa.gov/ics/advisories/icsa-20-205-01 [No Types Assigned]
  • Initial Analysis by [email protected]

    Jul. 28, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://www.se.com/ww/en/download/document/SESB-2020-105-01/ No Types Assigned https://www.se.com/ww/en/download/document/SESB-2020-105-01/ Vendor Advisory
    Added CWE NIST CWE-200
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tricon_tcm_4351_firmware:*:*:*:*:*:*:*:* versions from (including) 10.2.0 up to (excluding) 10.5.4 OR cpe:2.3:h:schneider-electric:tricon_tcm_4351:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tricon_tcm_4352_firmware:*:*:*:*:*:*:*:* versions from (including) 10.2.0 up to (excluding) 10.5.4 OR cpe:2.3:h:schneider-electric:tricon_tcm_4352:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tricon_tcm_4351a_firmware:*:*:*:*:*:*:*:* versions from (including) 10.2.0 up to (excluding) 10.5.4 OR cpe:2.3:h:schneider-electric:tricon_tcm_4351a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tricon_tcm_4351b_firmware:*:*:*:*:*:*:*:* versions from (including) 10.2.0 up to (excluding) 10.5.4 OR cpe:2.3:h:schneider-electric:tricon_tcm_4351b:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tricon_tcm_4352a_firmware:*:*:*:*:*:*:*:* versions from (including) 10.2.0 up to (excluding) 10.5.4 OR cpe:2.3:h:schneider-electric:tricon_tcm_4352a:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tricon_tcm_4352b_firmware:*:*:*:*:*:*:*:* versions from (including) 10.2.0 up to (excluding) 10.5.4 OR cpe:2.3:h:schneider-electric:tricon_tcm_4352b:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-7491 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-7491 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.78 }} 0.61%

score

0.81171

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
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Scope
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