CVE-2020-15791 - CVE House
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Status published Unknown CVE-2020-15791

A vulnerability has been identified in SIMATIC S7-300 CPU family...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants), SIMATIC S7-400 CPU family (incl. SIPLUS variants), SIMATIC WinAC RTX (F) 2010, SINUMERIK 840D sl
Vulnerable Versions:
All versions

Timeline

Official Publish: September 9th, 2020
Last Modified: June 2nd, 2026
Added to House: July 21st, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)