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CVE-2020-15791

MEDIUM
6.5
CVSS Severity Score
EPSS Score0.0580%
EPSS Percentile42.92th
PublishedSep 9, 2020
Last ModifiedJun 2, 2026

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.

Affected Platforms (CPE)

πŸ’»
Siemens

Simatic S7 300 Cpu 312 Firmware

All versions
πŸ’»
Siemens

Simatic S7 300 Cpu 314 Firmware

All versions
πŸ’»
Siemens

Simatic S7 300 Cpu 315 2 Dp Firmware

All versions
πŸ’»
Siemens

Simatic S7 300 Cpu 315 2 Pn Firmware

All versions
πŸ’»
Siemens

Simatic S7 300 Cpu 317 2 Pn Firmware

All versions
πŸ’»
Siemens

Simatic S7 300 Cpu 317 2 Dp Firmware

All versions
πŸ’»
Siemens

Simatic S7 300 Cpu 315f 2 Dp Firmware

All versions
πŸ’»
Siemens

Simatic S7 300 Cpu 315f 2 Pn Firmware

All versions
πŸ’»
Siemens

Simatic S7 300 Cpu 317f 2 Pn Firmware

All versions
πŸ’»
Siemens

Simatic S7 300 Cpu 317f 2 Dp Firmware

All versions
πŸ’»
Siemens

Simatic S7 400 Cpu 412 Firmware

All versions
πŸ’»
Siemens

Simatic S7 400 Cpu 414 Firmware

All versions
πŸ’»
Siemens

Simatic S7 400 Cpu 416 Firmware

All versions
πŸ’»
Siemens

Simatic S7 400 Cpu 417 Firmware

All versions

References & Advisories

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