What is CVE-2023-28657?

CVE-2023-28657 is a high-severity vulnerability in Contec Conprosys Hmi System, classified under Missing Authorization. CVSS score: 8.8/10. Published 2023-06-01.

How severe is CVE-2023-28657?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Contec Conprosys Hmi System

CVE-2023-28657

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.

Vulnerability class: Broken Access Control

EPSS: 0.007 (51.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Contec Conprosys_hmi_system
Contec Co., Ltd. Conprosys Hmi System (Chs) — versions versions prior to 3.5.3

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

vultures@jpcert.or.jp (Vendor Advisory)
vultures@jpcert.or.jp (Vendor Advisory)
vultures@jpcert.or.jp (Third Party Advisory)

Frequently asked questions

What is CVE-2023-28657?: CVE-2023-28657 is a high-severity vulnerability in Contec Conprosys Hmi System, classified under Missing Authorization. CVSS score: 8.8/10. Published 2023-06-01.
How severe is CVE-2023-28657?: High severity. CVSS v3 base score is 8.8 out of 10.