CVE-2014-5074: Siemens SIMATIC s7-1500 CPU Firmware

High severity, CVSS 7.1. EPSS: 9.7% chance of exploitation in the next 30 days.

Siemens SIMATIC S7-1500 CPU devices with firmware before 1.6 allow remote attackers to cause a denial of service (device restart and STOP transition) via crafted TCP packets.

Affected products

• Siemens SIMATIC s7-1500 CPU Firmware: up to and including 1.5.1; version 1.0.1 only; version 1.1.0 only; version 1.1.1 only; version 1.1.2 only; version 1.5 only
• Siemens SIMATIC s7-1511-1 Pn CPU
• Siemens SIMATIC s7-1513-1 Pn CPU
• Siemens SIMATIC s7-1515-2 Pn CPU
• Siemens SIMATIC s7-1516-3 Pn/dp CPU
• Siemens SIMATIC s7-1516f-3 Pn/dp CPU
• Siemens SIMATIC s7-1518-4 Pn/dp CPU
• Siemens SIMATIC s7-1518f-4 Pn/dp CPU

Published 2014-08-17. Last modified 2026-06-17.