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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Siemens | SIMATIC CN 4100 | < V5.0 | V5.0 |
Advisories 3
- ICSA-26-134-10 Siemens SIMATIC CISA ICS & IT advisories · May 14, 2026
- NCSC-2026-0147 Kwetsbaarheden verholpen in Siemens-producten NCSC-NL (Netherlands) · May 13, 2026
- SSA-032379 SSA-032379: Multiple Vulnerabilities in SIMATIC CN 4100 Before V5.0 Siemens ProductCERT · May 12, 2026