Missing authorization in Contec Co., Ltd. CONPROSYS HMI System
Priority MEDIUM 41CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-862.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00708 53rd percentileScored 2026-11-07
Fix Fixed CONPROSYS HMI System (CHS) (Contec Co., Ltd.): 3.5.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Contec Co., Ltd. | CONPROSYS HMI System (CHS) | before 3.5.3 | 3.5.3 | Patch available | CNA |
- CONPROSYS HMI System (CHS) VendorContec Co., Ltd. Affected before 3.5.3 Fixed in 3.5.3 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:contec:conprosys_hmi_system:*:*:*:*:*:*:*:* | before 3.5.3 | Vulnerable | Contec Co., Ltd. |
- cpe:2.3:a:contec:conprosys_hmi_system:*:*:*:*:*:*:*:* Versions before 3.5.3 Vulnerable ·Contec Co., Ltd.
Remediation
- Fix · CNA CONPROSYS HMI System (CHS) (Contec Co., Ltd.) Fixed in 3.5.3
Timeline
- 2026-10-02 Threatist record created from CVE-2023-28657
- 2026-10-03 Alias added: GHSA-mvj7-x43c-gpcj
References
More Contec Co., Ltd. Conprosys Hmi System vulnerabilities
- TI-2022-21852 OS command injection in Contec Co., Ltd. CONPROSYS HMI System CVSS 3.1CRITICAL 9.8
- TI-2023-13585 SQL injection in Contec Co., Ltd. CONPROSYS HMI System CVSS 3.1HIGH 7.2
- TI-2023-13169 Cross-site scripting in Contec Co., Ltd. CONPROSYS HMI System CVSS 3.1MEDIUM 4.8
- TI-2023-08595 Improper privilege management in Contec Co., Ltd. CONPROSYS HMI System CVSS 3.1HIGH 7.5
- TI-2023-13230 Cleartext storage of sensitive information in Contec Co., Ltd. CONPROSYS HMI System CVSS 3.1HIGH 8.1
- TI-2023-08633 Cross-site scripting in Contec Co., Ltd. CONPROSYS HMI System CVSS 3.1MEDIUM 5.4
Sources
- CVE-2023-28657 · CVE Program
- CVE-2023-28657 · NVD
- FIRST EPSS
- GHSA-mvj7-x43c-gpcj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences