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wid-sec-w-2026-0889  ·  Published 2026-03-26  ·  View on BSI CERT-Bund ↗

Siemens SICAM: Multiple Vulnerabilities allow Denial of Service

CVSS 8.7 HIGH

Risk Summary

A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.10), RTUM85 RTU Base (All versions < V26.10). The affected application contains denial-of-service (DoS) vulnerability. The remote operation mode is susceptible to a resource exhaustion condition when subjected to a high volume of requests. Sending multiple requests can exhaust resources, preventing parameterization and requiring a reset or reboot to restore functionality. A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.10), SICORE Base system (All versions < V26.10.0). The affected application contains an out-of-bounds write vulnerability while parsing specially crafted XML inputs. This could allow an unauthenticated attacker to exploit this issue by sending a malicious XML request, which may cause the service to crash, resulting in a denial-of-service condition.

Affected Vendors

Siemens

Affected Products (6)

Siemens · SICAM CPCI85 <26.10
Siemens · SICAM CPCI85 26.10
Siemens · SICAM RTUM85 <26.10
Siemens · SICAM RTUM85 26.10
Siemens · SICAM SICORE <26.10.0
Siemens · SICAM SICORE 26.10.0

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