CVE-2020-15791
Siemens · published 2020-09-09
Source record Collected from the National Vulnerability Database (NVD)
Description
Description by Siemens AG via the CVE Program.
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.
Status at the source
- NVD status: Modified
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Siemens | SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) | All versions: affected |
| Siemens | SIMATIC S7-400 CPU family (incl. SIPLUS variants) | All versions: affected |
| Siemens | SIMATIC WinAC RTX (F) 2010 | All versions: affected |
| Siemens | SINUMERIK 840D sl | All versions: affected |
Products named in NVD's CPE match criteria (14)
cpe:2.3:o:siemens:simatic_s7-300_cpu_312_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-300_cpu_314_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-300_cpu_315-2_dp_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-300_cpu_315-2_pn_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-300_cpu_317-2_pn_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-300_cpu_317-2_dp_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-300_cpu_315f-2_dp_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-300_cpu_315f-2_pn_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-300_cpu_317f-2_pn_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-300_cpu_317f-2_dp_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-400_cpu_412_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-400_cpu_414_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-400_cpu_416_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:simatic_s7-400_cpu_417_firmware:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 6.5 MEDIUM — as published by NIST (Primary)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 3.1: 6.5 MEDIUM — as published by CISA-ADP (Secondary)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0: 3.3 LOW — as published by NIST (Primary)
AV:A/AC:L/Au:N/C:P/I:N/A:N - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: none · Automatable: no · Technical impact: partial
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://cert-portal.siemens.com/productcert/pdf/ssa-381684.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-381684.pdf
Source dates: published 2020-09-09, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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