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Vulnerability record · CVE-2023-28399 · published 1 June 2023

CVE-2023-28399: Contec conprosys hmi system incorrect permission assignment vulnerability

Contec · Conprosys Hmi System

Incorrect permission assignment for critical resource exists in CONPROSYS HMI System (CHS) versions prior to 3.5.3. ACL (Access Control List) is not appropriately set to the local folder where the affected product is installed, therefore a wide range of privileges is permitted to a user of the PC where the affected product is installed. As a result, the user may be able to destroy the system and/or execute a malicious program.

7.8 CVSS 3.1 High EPSS 0.18% · top 93.0% CWE-732 · Incorrect permission assignment
7.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Incorrect permission assignment for critical resource exists in CONPROSYS HMI System (CHS) versions prior to 3.5.3. ACL (Access Control List) is not appropriately set to the local folder where the affected product is installed, therefore a wide range of privileges is permitted to a user of the PC where the affected product is installed. As a result, the user may be able to destroy the system and/or execute a malicious program.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://jvn.jp/en/vu/JVNVU93372935/ Third Party Advisory
https://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230531_e Vendor Advisory
https://www.contec.com/jp/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_23053 Vendor Advisory
https://jvn.jp/en/vu/JVNVU93372935/ Third Party Advisory
https://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230531_e Vendor Advisory
https://www.contec.com/jp/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_23053 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-28399), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.