CVE-2026-54800
Medium
Description
A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.20), SICORE Base system (All versions < V26.20.0). The affected application ships with a default configuration that disables all OPC UA security mechanisms. This could allow an attacker to gain unauthorized access and control over critical system functions.
SeverityMedium
CVSS4.8
Exploit probability—
ProductCPCI85 Central Processing/Communication
PublishedJul 9, 2026
First seenJul 9, 2026
Weakness typeCWE-1188CWE-1188
How to fix
Update
- Siemens CPCI85 Central Processing/CommunicationV26.20 or later
- Siemens SICORE Base systemV26.20.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Siemens CPCI85 Central Processing/Communication | v < V26.20 | V26.20 |
| Siemens SICORE Base system | v < V26.20.0 | V26.20.0 |
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