{"id":"CVE-2020-15791","state":"PUBLISHED","title":"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) (A","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.","publishedAt":"2020-09-09T18:13:11.000Z","updatedAt":"2026-06-02T18:45:29.902Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"CISA-ADP"},"assigner":"siemens","products":["Siemens SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)","Siemens SIMATIC S7-400 CPU family (incl. SIPLUS variants)","Siemens SIMATIC WinAC RTX (F) 2010","Siemens SINUMERIK 840D sl"],"affected":[{"vendor":"Siemens","product":"SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)","versions":[{"version":"All versions","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-400 CPU family (incl. SIPLUS variants)","versions":[{"version":"All versions","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC WinAC RTX (F) 2010","versions":[{"version":"All versions","status":"affected"}]},{"vendor":"Siemens","product":"SINUMERIK 840D sl","versions":[{"version":"All versions","status":"affected"}]}],"references":["https://cert-portal.siemens.com/productcert/pdf/ssa-381684.pdf"],"weaknesses":["CWE-522"],"ingestedAt":"2026-10-29T19:46:36.523Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/15xxx/CVE-2020-15791.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2020-15791","state":"PUBLISHED","datePublished":"2020-09-09T18:13:11.000Z","dateUpdated":"2026-06-02T18:45:29.902Z","assignerShortName":"siemens","assignerOrgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77","dateReserved":"2020-07-15T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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":[{"vendor":"Siemens","product":"SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)","versions":[{"version":"All versions","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-400 CPU family (incl. SIPLUS variants)","versions":[{"version":"All versions","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC WinAC RTX (F) 2010","versions":[{"version":"All versions","status":"affected"}]},{"vendor":"Siemens","product":"SINUMERIK 840D sl","versions":[{"version":"All versions","status":"affected"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-381684.pdf","tags":["x_refsource_MISC"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-522","description":"CWE-522: Insufficiently Protected Credentials","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"siemens","dateUpdated":"2020-12-14T21:05:18.000Z","orgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"productcert@siemens.com","ID":"CVE-2020-15791","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)","version":{"version_data":[{"version_value":"All versions"}]}},{"product_name":"SIMATIC S7-400 CPU family (incl. SIPLUS variants)","version":{"version_data":[{"version_value":"All versions"}]}},{"product_name":"SIMATIC WinAC RTX (F) 2010","version":{"version_data":[{"version_value":"All versions"}]}},{"product_name":"SINUMERIK 840D sl","version":{"version_data":[{"version_value":"All versions"}]}}]},"vendor_name":"Siemens"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"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."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-522: Insufficiently Protected Credentials"}]}]},"references":{"reference_data":[{"name":"https://cert-portal.siemens.com/productcert/pdf/ssa-381684.pdf","refsource":"MISC","url":"https://cert-portal.siemens.com/productcert/pdf/ssa-381684.pdf"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-381684.pdf","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T13:22:30.753Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"ADJACENT_NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-06-02T18:45:11.766537Z","id":"CVE-2020-15791","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-02T18:45:29.902Z"}}]}}}