CVE-2012-3017: Siemens SIMATIC s7-400 CPU 414-3 Pn/dp

High severity, CVSS 7.8. EPSS: 3.5% chance of exploitation in the next 30 days.

Siemens SIMATIC S7-400 PN CPU devices with firmware 5.x allow remote attackers to cause a denial of service (defect-mode transition and service outage) via (1) malformed HTTP traffic or (2) malformed IP packets.

Affected products

• Siemens SIMATIC s7-400 CPU 414-3 Pn/dp
• Siemens SIMATIC s7-400 CPU 416-3 Pn/dp
• Siemens SIMATIC s7-400 CPU 416f-3 Pn/dp
• Siemens SIMATIC s7-400 CPU Firmware: version 5.0 only

Published 2012-07-31. Last modified 2026-06-16.