Main Vulnerability Database Vulnerabilities #VU31814

Improper access control in Schneider Electric products - CVE-2020-7491

Published: July 24, 2020

Vulnerability identifier: #VU31814

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-7491

CWE-ID: CWE-284

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in a legacy debug port account. A remote attacker can bypass implemented security restrictions and gain unauthorized access to the application.

Note: This vulnerability affects the following versions:

10.2.0 through 10.5.3

Affected software

Tricon Communications Module (TCM) Models 4351
Tricon Communications Module (TCM) Models 4352
Tricon Communications Module (TCM) Models 4351A/B
Tricon Communications Module (TCM) Models 4352A/B

How to mitigate CVE-2020-7491

Install updates from vendor's website.

Tricon Communications Module (TCM) Models 4351 - update to 10.5.4
Tricon Communications Module (TCM) Models 4352 - update to 10.5.4
Tricon Communications Module (TCM) Models 4351A/B - update to 10.5.4
Tricon Communications Module (TCM) Models 4352A/B - update to 10.5.4

External References

https://www.se.com/ww/en/download/document/SESB-2020-105-01/

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