What’s Vulnerable › Vulnerabilities
CVE-2026-22925
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-12 · updated 2026-10-24
- Weakness: CWE-770
Description
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V5.0). The affected application is susceptible to resource exhaustion when subjected to high volume of TCP SYN packets This could allow an attacker to render the service unavailable and cause denial-of-service conditions by overwhelming system resources.
Affected products
- Siemens SIMATIC CN 4100: before 5.0 — fixed in 5.0
How to fix
Upgrade to a fixed version: Siemens SIMATIC CN 4100 5.0. Check the vendor advisory for mitigations.
References
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