{"id":"CVE-2021-37205","state":"PUBLISHED","title":"A vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (A","description":"A vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V21.9 < V21.9.4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions >= V4.5.0 < V4.5.2), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.9.2 < V2.9.4), SIMATIC S7-1500 Software Controller (All versions >= V21.9 < V21.9.4), SIMATIC S7-PLCSIM Advanced (All versions >= V4.0 < V4.0 SP1), SIPLUS TIM 1531 IRC (All versions < V2.3.6), TIM 1531 IRC (All versions < V2.3.6). An unauthenticated attacker could cause a denial-of-service condition in a PLC when sending specially prepared packets over port 102/tcp. A restart of the affected device is needed to restore normal operations.","publishedAt":"2022-02-09T15:16:57.000Z","updatedAt":"2025-04-18T18:29:47.038Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C","source":"siemens"},"assigner":"siemens","products":["Siemens SIMATIC Drive Controller family","Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)","Siemens SIMATIC S7-1200 CPU family (incl. SIPLUS variants)","Siemens SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)","Siemens SIMATIC S7-1500 Software Controller","Siemens SIMATIC S7-PLCSIM Advanced","Siemens SIPLUS TIM 1531 IRC","Siemens TIM 1531 IRC"],"affected":[{"vendor":"Siemens","product":"SIMATIC Drive Controller family","defaultStatus":"unknown","versions":[{"version":"All versions >= V2.9.2 < V2.9.4","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)","defaultStatus":"unknown","versions":[{"version":"All versions >= V21.9 < V21.9.4","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1200 CPU family (incl. SIPLUS variants)","defaultStatus":"unknown","versions":[{"version":"All versions >= V4.5.0 < V4.5.2","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)","defaultStatus":"unknown","versions":[{"version":"All versions >= V2.9.2 < V2.9.4","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 Software Controller","defaultStatus":"unknown","versions":[{"version":"All versions >= V21.9 < V21.9.4","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-PLCSIM Advanced","defaultStatus":"unknown","versions":[{"version":"All versions >= V4.0 < V4.0 SP1","status":"affected"}]},{"vendor":"Siemens","product":"SIPLUS TIM 1531 IRC","defaultStatus":"unknown","versions":[{"version":"All versions < V2.3.6","status":"affected"}]},{"vendor":"Siemens","product":"TIM 1531 IRC","defaultStatus":"unknown","versions":[{"version":"All versions < V2.3.6","status":"affected"}]}],"references":["https://cert-portal.siemens.com/productcert/pdf/ssa-838121.pdf"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T19:48:47.122Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/37xxx/CVE-2021-37205.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-37205","state":"PUBLISHED","datePublished":"2022-02-09T15:16:57.000Z","dateUpdated":"2025-04-18T18:29:47.038Z","assignerShortName":"siemens","assignerOrgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77","dateReserved":"2021-07-21T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V21.9 < V21.9.4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions >= V4.5.0 < V4.5.2), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.9.2 < V2.9.4), SIMATIC S7-1500 Software Controller (All versions >= V21.9 < V21.9.4), SIMATIC S7-PLCSIM Advanced (All versions >= V4.0 < V4.0 SP1), SIPLUS TIM 1531 IRC (All versions < V2.3.6), TIM 1531 IRC (All versions < V2.3.6). An unauthenticated attacker could cause a denial-of-service condition in a PLC when sending specially prepared packets over port 102/tcp. A restart of the affected device is needed to restore normal operations."}],"affected":[{"vendor":"Siemens","product":"SIMATIC Drive Controller family","defaultStatus":"unknown","versions":[{"version":"All versions >= V2.9.2 < V2.9.4","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)","defaultStatus":"unknown","versions":[{"version":"All versions >= V21.9 < V21.9.4","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1200 CPU family (incl. SIPLUS variants)","defaultStatus":"unknown","versions":[{"version":"All versions >= V4.5.0 < V4.5.2","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)","defaultStatus":"unknown","versions":[{"version":"All versions >= V2.9.2 < V2.9.4","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-1500 Software Controller","defaultStatus":"unknown","versions":[{"version":"All versions >= V21.9 < V21.9.4","status":"affected"}]},{"vendor":"Siemens","product":"SIMATIC S7-PLCSIM Advanced","defaultStatus":"unknown","versions":[{"version":"All versions >= V4.0 < V4.0 SP1","status":"affected"}]},{"vendor":"Siemens","product":"SIPLUS TIM 1531 IRC","defaultStatus":"unknown","versions":[{"version":"All versions < V2.3.6","status":"affected"}]},{"vendor":"Siemens","product":"TIM 1531 IRC","defaultStatus":"unknown","versions":[{"version":"All versions < V2.3.6","status":"affected"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-838121.pdf"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C","baseScore":7.5,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","lang":"en","description":"CWE-401: Missing Release of Memory after Effective Lifetime","type":"CWE"}]}],"providerMetadata":{"shortName":"siemens","orgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77","dateUpdated":"2023-04-11T09:01:55.468Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-838121.pdf","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T01:16:03.897Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-04-18T15:12:33.320440Z","id":"CVE-2021-37205","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-04-18T18:29:47.038Z"}}]}}}