CVE-2020-15791

MEDIUM

SIMATIC S7-300 and S7-400 CPU Families - Insufficiently Protected Credentials via ISO-TSAP Authentication

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 6.5
EPSS 0.0008
EPSS Percentile 23.8%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-522
Status published
Products (14)
siemens/simatic_s7-300_cpu_312_firmware
siemens/simatic_s7-300_cpu_314_firmware
siemens/simatic_s7-300_cpu_315-2_dp_firmware
siemens/simatic_s7-300_cpu_315-2_pn_firmware
siemens/simatic_s7-300_cpu_315f-2_dp_firmware
siemens/simatic_s7-300_cpu_315f-2_pn_firmware
siemens/simatic_s7-300_cpu_317-2_dp_firmware
siemens/simatic_s7-300_cpu_317-2_pn_firmware
siemens/simatic_s7-300_cpu_317f-2_dp_firmware
siemens/simatic_s7-300_cpu_317f-2_pn_firmware
... and 4 more
Published Sep 09, 2020
Tracked Since Feb 18, 2026