Improper authentication in Contec Co., Ltd. CONPROSYS HMI System
Priority LOW 26CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
Use of password hash instead of password for authentication vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote authenticated attacker to obtain user credentials information via a man-in-the-middle attack.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0092 60th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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) | Ver.3.4.5 and earlier | — | No fix listed | CNA |
- CONPROSYS HMI System (CHS) VendorContec Co., Ltd. Affected Ver.3.4.5 and earlier Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:contec:conprosys_hmi_system:*:*:*:*:*:*:*:* | up to 3.4.5 | Vulnerable | Contec Co., Ltd. |
- cpe:2.3:a:contec:conprosys_hmi_system:*:*:*:*:*:*:*:* Versions up to 3.4.5 Vulnerable ·Contec Co., Ltd.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-22334
- 2026-10-03 Alias added: GHSA-4h9q-9r2g-27j5
References
Patch 3
- https://www.contec.com/download/contract/contract4/?itemid=ea8039aa-3434-4999-9ab6-897aa690210c&downloaditemid=866d7d3c-aae9-438d-87f3-17aa040df90b
- https://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230110_en.pdf
- https://jvn.jp/en/vu/JVNVU96873821
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-2023-13175 Missing authorization in Contec Co., Ltd. CONPROSYS HMI System CVSS 3.1HIGH 8.8
- 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
Sources
- CVE-2023-22334 · CVE Program
- CVE-2023-22334 · NVD
- FIRST EPSS
- GHSA-4h9q-9r2g-27j5 · GitHub Advisory Database · CC BY 4.0
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