{"id":"CVE-2023-1617","aliases":["EUVD-2023-23849","GHSA-493h-rq8m-6xjp"],"status":"published","title":"Improper Authentication Mechanism in B\u0026R VC4 Visualization","description":"Improper Authentication vulnerability in B\u0026R Industrial Automation B\u0026R 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\u0026R 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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00719,"percentile":0.54153,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2023-04-14T11:48:53Z","modified":"2026-06-17T05:28:22Z","products":[{"vendor":"b\u0026r industrial automation","product":"b\u0026r vc4"},{"vendor":"br-automation","product":"vc4"}],"references":[{"url":"https://www.br-automation.com/downloads_br_productcatalogue/assets/1681046878970-en-original-1.0.pdf","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-1617"},{"url":"https://github.com/advisories/GHSA-493h-rq8m-6xjp"}],"sources":{"cve":[{"id":"CVE-2023-1617","title":"Improper Authentication Mechanism in B\u0026R VC4 Visualization","description":"Improper Authentication vulnerability in B\u0026R Industrial Automation B\u0026R 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\u0026R 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","status":"published","published":"2023-04-14T11:48:53.396Z","modified":"2025-02-06T19:48:05.89Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:35:32.019713Z"}],"euvd":[{"id":"EUVD-2023-23849","description":"Improper Authentication vulnerability in B\u0026R Industrial Automation B\u0026R 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\u0026R 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","status":"published","published":"2023-04-14T11:48:53Z","modified":"2025-02-06T19:48:05Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:04:02.906364Z"}],"ghsa":[{"id":"GHSA-493h-rq8m-6xjp","title":"Improper Authentication vulnerability in B\u0026R Industrial Automation B\u0026R VC4 (VNC-Server modules). ...","description":"Improper Authentication vulnerability in B\u0026R Industrial Automation B\u0026R 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\u0026R 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","status":"published","published":"2023-07-06T19:24:14Z","modified":"2024-04-04T05:36:10Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:56:33.854094Z"}],"nvd":[{"id":"CVE-2023-1617","description":"Improper Authentication vulnerability in B\u0026R Industrial Automation B\u0026R 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\u0026R 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","status":"published","published":"2023-04-14T12:15:07.377Z","modified":"2026-06-17T05:28:22.713Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:07:55.652109Z"}]}}