CVE-2016-9159: Siemens SIMATIC s7-300 CPU Firmware

Medium severity, CVSS 5.9. EPSS: 1.5% chance of exploitation in the next 30 days.

A vulnerability has been identified in SIMATIC S7-300 CPU family (All versions), SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 V6 and earlier CPU family (All versions), SIMATIC S7-400 V7 CPU family (All versions), SIMATIC S7-410 V8 CPU family (All versions), SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants) (All versions). An attacker with network access to port 102/tcp (ISO-TSAP) or via Profibus could obtain credentials from the PLC if protection-level 2 is configured on the affected devices.

Affected products

• Siemens SIMATIC s7-300 CPU Firmware: affected versions not specified
• Siemens SIMATIC s7-400 CPU Firmware: affected versions not specified

Published 2016-12-17. Last modified 2026-06-17.