Vulnerability identifier: #VU31812

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-7485

CWE-ID: CWE-912

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Triconex TriStation 1131
Server applications / SCADA systems

Vendor: Schneider Electric

Description

The vulnerability allows a local user to compromise vulnerable system

The vulnerability exists due to hidden functionality (backdoor) is present in software, related to a legacy support account. A local user can use this functionality to inappropriate access to the TriStation 1131 project file.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Triconex TriStation 1131: 4.9.0 - 4.10.0

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External links
http://www.se.com/ww/en/download/document/SESB-2020-105-01

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.