{"cve":{"cve_id":"CVE-2023-1617","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":0.00719,"epss_percentile":0.49034,"epss_as_of":"2026-06-23","description":"Improper Authentication vulnerability in B&R Industrial Automation B&R VC4 (VNC-Server modules).  This vulnerability may allow an unauthenticated network-based attacker to bypass the authentication mechanism of the VC4 visualization on affected devices. The impact of this vulnerability depends on the functionality provided in the visualization.\nThis issue affects B&R VC4: from 3.* through 3.96.7, from 4.0* through 4.06.7, from 4.1* through 4.16.3, from 4.2* through 4.26.8, from 4.3* through 4.34.6, from 4.4* through 4.45.1, from 4.5* through 4.45.3, from 4.7* through 4.72.9.\n\n","published_at":"2023-04-14T11:48:53.396000Z","last_modified_at":null,"cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"total","cwes":["CWE-287"],"nvd_references":["https://www.br-automation.com/downloads_br_productcatalogue/assets/1681046878970-en-original-1.0.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":"2026-06-29T01:24:34.343180Z"},"effective_severity":"CRITICAL","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":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"b-r-industrial-automation","vendor_name":"B&R Industrial Automation","product_slug":"b-r-vc4","product_name":"B&R VC4","version_start":"3.*","version_start_inclusive":true,"version_end":"3.96.7","version_end_inclusive":true,"cpe23_uri":"cve5:b-r-industrial-automation:b-r-vc4:3.*:3.96.7"},{"vendor_slug":"b-r-industrial-automation","vendor_name":"B&R Industrial Automation","product_slug":"b-r-vc4","product_name":"B&R VC4","version_start":"4.0*","version_start_inclusive":true,"version_end":"4.06.7","version_end_inclusive":true,"cpe23_uri":"cve5:b-r-industrial-automation:b-r-vc4:4.0*:4.06.7"},{"vendor_slug":"b-r-industrial-automation","vendor_name":"B&R Industrial Automation","product_slug":"b-r-vc4","product_name":"B&R VC4","version_start":"4.1*","version_start_inclusive":true,"version_end":"4.16.3","version_end_inclusive":true,"cpe23_uri":"cve5:b-r-industrial-automation:b-r-vc4:4.1*:4.16.3"},{"vendor_slug":"b-r-industrial-automation","vendor_name":"B&R Industrial Automation","product_slug":"b-r-vc4","product_name":"B&R VC4","version_start":"4.2*","version_start_inclusive":true,"version_end":"4.26.8","version_end_inclusive":true,"cpe23_uri":"cve5:b-r-industrial-automation:b-r-vc4:4.2*:4.26.8"},{"vendor_slug":"b-r-industrial-automation","vendor_name":"B&R Industrial Automation","product_slug":"b-r-vc4","product_name":"B&R VC4","version_start":"4.3*","version_start_inclusive":true,"version_end":"4.34.6","version_end_inclusive":true,"cpe23_uri":"cve5:b-r-industrial-automation:b-r-vc4:4.3*:4.34.6"},{"vendor_slug":"b-r-industrial-automation","vendor_name":"B&R Industrial Automation","product_slug":"b-r-vc4","product_name":"B&R VC4","version_start":"4.4*","version_start_inclusive":true,"version_end":"4.45.1","version_end_inclusive":true,"cpe23_uri":"cve5:b-r-industrial-automation:b-r-vc4:4.4*:4.45.1"},{"vendor_slug":"b-r-industrial-automation","vendor_name":"B&R Industrial Automation","product_slug":"b-r-vc4","product_name":"B&R VC4","version_start":"4.5*","version_start_inclusive":true,"version_end":"4.45.3","version_end_inclusive":true,"cpe23_uri":"cve5:b-r-industrial-automation:b-r-vc4:4.5*:4.45.3"},{"vendor_slug":"b-r-industrial-automation","vendor_name":"B&R Industrial Automation","product_slug":"b-r-vc4","product_name":"B&R VC4","version_start":"4.7*","version_start_inclusive":true,"version_end":"4.72.9","version_end_inclusive":true,"cpe23_uri":"cve5:b-r-industrial-automation:b-r-vc4:4.7*:4.72.9"}],"exploit_refs":[],"news":[],"references":[{"url":"https://www.br-automation.com/downloads_br_productcatalogue/assets/1681046878970-en-original-1.0.pdf","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2023-04-14T11:48:53.396000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:25:47.920460Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:25:47.920460Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:25:47.920460Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T01:24:34.343180Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:24:34.343180Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:24:34.343180Z","label":"SSVC decision revised","source":"vulnrichment"}]}