{"cve":{"cve_id":"CVE-2020-15783","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.01601,"epss_percentile":0.72651,"epss_as_of":"2026-06-23","description":"A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC TDC CPU555 (All versions), SINUMERIK 840D sl (All versions). Sending multiple specially crafted packets to the affected devices could cause a Denial-of-Service on port 102. A cold restart is required to recover the service.","published_at":"2020-11-12T19:21:09Z","last_modified_at":null,"cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"partial","cwes":["CWE-400"],"nvd_references":["https://cert-portal.siemens.com/productcert/pdf/ssa-492828.pdf"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:13:36.776169Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-300-cpu-family-incl.-related-et200-cpus-and-siplus-variants","product_name":"SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)","version_start":"All versions","version_start_inclusive":true,"version_end":"All versions","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-s7-300-cpu-family-incl.-related-et200-cpus-and-siplus-variants:All versions:All versions"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-tdc-cpu555","product_name":"SIMATIC TDC CPU555","version_start":"All versions","version_start_inclusive":true,"version_end":"All versions","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-tdc-cpu555:All versions:All versions"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"sinumerik-840d-sl","product_name":"SINUMERIK 840D sl","version_start":"All versions","version_start_inclusive":true,"version_end":"All versions","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:sinumerik-840d-sl:All versions:All versions"}],"exploit_refs":[],"news":[],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-492828.pdf","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2020-11-12T19:21:09Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-06-24T00:31:26.536244Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:31:26.536244Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:31:26.536244Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:26.536244Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:26.536244Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:26.536244Z","label":"CVSS score revised","source":"vulnrichment"}]}