#VU76698 Improper access control in CONPROSYS HMI System - CVE-2023-28657

Vulnerability identifier: #VU76698

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-28657

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CONPROSYS HMI System
Other software / Other software solutions

Vendor: Contec

Description

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

The vulnerability exists due to improper access restrictions. A remote user can bypass implemented security restrictions and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

CONPROSYS HMI System: 3.5.0 - 3.5.2

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External links
https://jvn.jp/en/vu/JVNVU93372935/index.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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