CVE-2023-22339: Contec Conprosys HMI System

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

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.

Affected products

• Contec Conprosys HMI System: up to and including 3.4.5

Published 2023-01-20. Last modified 2026-06-17.