SIMATIC CN 4100 vulnerabilities
5 known CVE vulnerabilities in SIMATIC CN 4100, translated and rated.
- CVE-2026-22924Critical
A vulnerability in SIMATIC CN 4100 (versions prior to V5.0) allows unauthenticated attackers to exhaust resources via unrestricted connections. This can disrupt normal device operations.
- CVE-2026-22925High
A vulnerability in SIMATIC CN 4100 (versions prior to V5.0) allows resource exhaustion via a high volume of TCP SYN packets. An attacker can cause service unavailability and denial-of-service conditions.
- CVE-2025-40940Medium
In SIMATIC CN 4100 (all versions < V4.0.1), the application exhibits inconsistent SNMP behavior, such as unexpected service availability and unreliable configuration handling across protocol versions. This could allow an attacker to access sensitive data.
- CVE-2025-40938High
A vulnerability has been identified in SIMATIC CN 4100 (all versions < V4.0.1) where the device stores sensitive information in the firmware. This could allow an attacker to access and misuse this information.
- CVE-2025-40937High
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application does not properly validate input parameters in its REST API, resulting in improper handling of unexpected arguments. This could allow an authenticated attacker to execute arbitrary code with limited privileges.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

