CVE-2011-20002

High

Description

A vulnerability has been identified in SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants) (All versions < V2.0.2), SIMATIC S7-1200 CPU V2 family (incl. SIPLUS variants) (All versions < V2.0.2). Affected controllers are vulnerable to capture-replay in the communication with the engineering software. This could allow an on-path attacker between the engineering software and the controller to execute any previously recorded commands at a later time (e.g. set the controller to STOP), regardless whether or not the controller had a password configured.

SeverityHigh
CVSS7.4
Exploit probability—
ProductSIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants)
PublishedOct 14, 2025
First seenOct 14, 2025
Weakness typeCWE-294CWE-294

How to fix

Update
  • Siemens SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants)V2.0.2 or later
  • Siemens SIMATIC S7-1200 CPU V2 family (incl. SIPLUS variants)V2.0.2 or later

Affected products

ProductAffected versionsFixed in
Siemens SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants)v < V2.0.2V2.0.2
Siemens SIMATIC S7-1200 CPU V2 family (incl. SIPLUS variants)v < V2.0.2V2.0.2

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