CVE-2023-28657 Privilege escalation in CONPROSYS HMI System (CHS)

High 8.8 Published 1 Jun 2023 Updated 9 Jan 2025

A local user can gain administrative privileges in CONPROSYS HMI System, allowing them to read or modify product information.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-28657?

CVE-2023-28657 is a high-severity vulnerability in Contec Co., Ltd. CONPROSYS HMI System (CHS), published on 1 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Improper access control vulnerability exists in CONPROSYS HMI System (CHS) versions prior to 3.5.3. A user of the PC where the affected product is installed may gain an administrative privilege. As a result, information regarding the product may be obtained and/or altered by the user.

Weakness: CWE-862

Which versions are affected by CVE-2023-28657?

It affects 1 product.

Products include Contec Conprosys Hmi System.

How do I fix CVE-2023-28657?

No fix has been published for CVE-2023-28657 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-28657 being exploited?

There is no known exploitation of CVE-2023-28657 in the wild and no public exploit code.

Sources

Also known as GHSA-mvj7-x43c-gpcj.