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Vulnerability record · CVE-2023-22339 · published 20 January 2023

CVE-2023-22339: Contec conprosys hmi system improper access control vulnerability

Contec · Conprosys Hmi System

Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to bypass access restriction and obtain the server certificate including the private key of the product.

7.5 CVSS 3.1 High EPSS 1.1% · top 34.8% CWE-284 · Improper access control
7.5CVSS 3.1 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to bypass access restriction and obtain the server certificate including the private key of the product.

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

Affected products

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

References

LinkTags
https://jvn.jp/en/vu/JVNVU96873821 PatchThird Party Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-22-347-03 Third Party AdvisoryUS Government Resource
https://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230110_e PatchVendor Advisory
https://www.contec.com/download/contract/contract4/?itemid=ea8039aa-3434-4999-9ab6-897aa690210c&downloaditemid=866d7d3c- PatchVendor Advisory
https://jvn.jp/en/vu/JVNVU96873821 PatchThird Party Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-22-347-03 Third Party AdvisoryUS Government Resource
https://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230110_e PatchVendor Advisory
https://www.contec.com/download/contract/contract4/?itemid=ea8039aa-3434-4999-9ab6-897aa690210c&downloaditemid=866d7d3c- PatchVendor Advisory

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Related vulnerabilities

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

9.8CVE-2022-44456CONPROSYS HMI System OS command injection via crafted requestCONPROSYS HMI System (CHS) Ver.3.4.4 and earlier contains an OS command injection flaw (CWE-78). A remote attacker can send a specially crafted reque…EPSS 70%analysed8.8CVE-2023-28657Contec conprosys hmi system missing authorization vulnerabilityImproper 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 in…EPSS 0.71%8.1CVE-2023-28713Contec conprosys hmi system cleartext storage of sensitive data vulnerabilityPlaintext storage of a password exists in CONPROSYS HMI System (CHS) versions prior to 3.5.3. Because account information of the database is saved in…EPSS 0.43%7.8CVE-2023-28399Contec conprosys hmi system incorrect permission assignment vulnerabilityIncorrect permission assignment for critical resource exists in CONPROSYS HMI System (CHS) versions prior to 3.5.3. ACL (Access Control List) is not …EPSS 0.18%7.5CVE-2023-22331Contec conprosys hmi system improper privilege management vulnerabilityUse of default credentials vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to alter user c…EPSS 1.0%7.2CVE-2023-29154Contec conprosys hmi system sql injection vulnerabilitySQL injection vulnerability exists in the CONPROSYS HMI System (CHS) versions prior to 3.5.3. A user who can access the affected product with an admi…EPSS 41%6.9CVE-2025-34081Contec conprosys hmi system vulnerabilityThe Contec Co.,Ltd. CONPROSYS HMI System (CHS) exposes a PHP phpinfo() debug page to unauthenticated users that may contain sensitive data useful for…EPSS 0.64%6.5CVE-2023-22324Contec conprosys hmi system sql injection vulnerabilitySQL injection vulnerability in the CONPROSYS HMI System (CHS) Ver.3.5.0 and earlier allows a remote authenticated attacker to execute an arbitrary SQ…EPSS 1.3%

Source: NIST National Vulnerability Database (record CVE-2023-22339), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.