CVE-2020-15791
Published: Sep 9, 2020
Modified: Jun 2, 2026
Description
A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX (F) 2010 (All versions), SINUMERIK 840D sl (All versions). The authentication protocol between a client and a PLC via port 102/tcp (ISO-TSAP) insufficiently protects the transmitted password. This could allow an attacker that is able to intercept the network traffic to obtain valid PLC credentials.
| Vendor | Product | Versions |
|---|---|---|
Siemens | SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) | affected All versions |
Siemens | SIMATIC S7-400 CPU family (incl. SIPLUS variants) | affected All versions |
Siemens | SIMATIC WinAC RTX (F) 2010 | affected All versions |
Siemens | SINUMERIK 840D sl | affected All versions |
Weaknesses (CWE)
References
Security Training
Train your team to recognize and prevent security threats with our comprehensive security awareness program.
Start TrainingVulnerability Scanning
Discover vulnerabilities in your applications and infrastructure before attackers do.
Scan Now