CVE-2014-2250: Siemens SIMATIC s7 CPU-1211c

High severity, CVSS 8.3. EPSS: 3.1% chance of exploitation in the next 30 days.

The random-number generator on Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via unspecified vectors, a different vulnerability than CVE-2014-2251.

Affected products

• Siemens SIMATIC s7 CPU-1211c
• Siemens SIMATIC s7 CPU 1200 Firmware: up to and including 3.0.2; version 3.0 only
• Siemens SIMATIC s7 CPU 1212c
• Siemens SIMATIC s7 CPU 1214c
• Siemens SIMATIC s7 CPU 1215c
• Siemens SIMATIC s7 CPU 1217c

Published 2014-03-24. Last modified 2026-06-17.