{"cve":{"cve_id":"CVE-2023-50821","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":0.00182,"epss_percentile":0.07909,"epss_as_of":"2026-06-23","description":"A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions < V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions < V17 Update 8), SIMATIC WinCC Runtime Professional V18 (All versions < V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions < V19 Update 1), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions < V8.0 Update 5). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition.","published_at":"2024-04-09T08:34:35.452000Z","last_modified_at":null,"cvss_v3_score":6.2,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C","cvss_v3_severity":"MEDIUM","cvss_v4_score":6.9,"cvss_v4_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","cvss_v4_severity":"MEDIUM","ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":false,"ssvc_technical_impact":"partial","cwes":["CWE-120"],"nvd_references":["https://cert-portal.siemens.com/productcert/html/ssa-730482.html"],"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":"2026-06-29T01:41:56.644083Z"},"effective_severity":"MEDIUM","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"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"},{"metric":"E","name":"E","value":"P","value_label":"Physical"},{"metric":"RL","name":"RL","value":"O","value_label":"O"},{"metric":"RC","name":"RC","value":"C","value_label":"Changed"}]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack 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UC04","version_end_inclusive":false,"cpe23_uri":"cve5:siemens:simatic-pcs-7-v9.1:0:V9.1 SP2 UC04"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-wincc-runtime-professional-v17","product_name":"SIMATIC WinCC Runtime Professional V17","version_start":"0","version_start_inclusive":true,"version_end":"V17 Update 8","version_end_inclusive":false,"cpe23_uri":"cve5:siemens:simatic-wincc-runtime-professional-v17:0:V17 Update 8"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-wincc-runtime-professional-v18","product_name":"SIMATIC WinCC Runtime Professional V18","version_start":"0","version_start_inclusive":true,"version_end":"V18 Update 4","version_end_inclusive":false,"cpe23_uri":"cve5:siemens:simatic-wincc-runtime-professional-v18:0:V18 Update 4"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-wincc-runtime-professional-v19","product_name":"SIMATIC WinCC Runtime Professional V19","version_start":"0","version_start_inclusive":true,"version_end":"V19 Update 1","version_end_inclusive":false,"cpe23_uri":"cve5:siemens:simatic-wincc-runtime-professional-v19:0:V19 Update 1"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-wincc-v7.5","product_name":"SIMATIC WinCC V7.5","version_start":"0","version_start_inclusive":true,"version_end":"V7.5 SP2 Update 16","version_end_inclusive":false,"cpe23_uri":"cve5:siemens:simatic-wincc-v7.5:0:V7.5 SP2 Update 16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-wincc-v8.0","product_name":"SIMATIC WinCC V8.0","version_start":"0","version_start_inclusive":true,"version_end":"V8.0 Update 5","version_end_inclusive":false,"cpe23_uri":"cve5:siemens:simatic-wincc-v8.0:0:V8.0 Update 5"}],"exploit_refs":[],"news":[],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-730482.html","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2024-04-09T08:34:35.452000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:31:00.193989Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:31:00.193989Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:31:00.193989Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:31:00.193989Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:31:00.193989Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:31:00.193989Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T01:41:56.644083Z","label":"SSVC decision 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