{"id":"CVE-2026-21718","aliases":["EUVD-2026-8947","GHSA-7r34-g88h-g49f"],"status":"published","title":"Copeland XWEB and XWEB Pro Use of a Broken or Risky Cryptographic Algorithm","description":"An authentication bypass vulnerability exists in Copeland XWEB Pro \nversion 1.12.1 and prior, enabling any attackers to bypass the \nauthentication requirement and achieve pre-authenticated code execution \non the system.","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00692,"percentile":0.53295,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-327"],"published":"2026-02-27T00:34:55Z","modified":"2026-06-17T10:18:57Z","products":[{"vendor":"copeland","product":"copeland xweb 300d pro"},{"vendor":"copeland","product":"copeland xweb 500b pro"},{"vendor":"copeland","product":"copeland xweb 500d pro"},{"vendor":"copeland","product":"xweb_300d_pro_firmware"},{"vendor":"copeland","product":"xweb_500b_pro_firmware"},{"vendor":"copeland","product":"xweb_500d_pro_firmware"}],"references":[{"url":"https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate","tags":["Product"]},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-057-10","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-057-10.json","tags":["Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21718"},{"url":"https://github.com/advisories/GHSA-7r34-g88h-g49f"}],"sources":{"cve":[{"id":"CVE-2026-21718","title":"Copeland XWEB and XWEB Pro Use of a Broken or Risky Cryptographic Algorithm","description":"An authentication bypass vulnerability exists in Copeland XWEB Pro \nversion 1.12.1 and prior, enabling any attackers to bypass the \nauthentication requirement and achieve pre-authenticated code execution \non the system.","status":"published","published":"2026-02-27T00:34:55.895Z","modified":"2026-03-02T18:58:23.373Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T13:41:42.05254Z"}],"euvd":[{"id":"EUVD-2026-8947","description":"An authentication bypass vulnerability exists in Copeland XWEB Pro \nversion 1.12.1 and prior, enabling any attackers to bypass the \nauthentication requirement and achieve pre-authenticated code execution \non the system.","status":"published","published":"2026-02-27T00:34:55Z","modified":"2026-03-02T18:58:23Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:48:12.668624Z"}],"ghsa":[{"id":"GHSA-7r34-g88h-g49f","title":"An authentication bypass vulnerability exists in Copeland XWEB Pro \nversion 1.12.1 and prior,...","description":"An authentication bypass vulnerability exists in Copeland XWEB Pro \nversion 1.12.1 and prior, enabling any attackers to bypass the \nauthentication requirement and achieve pre-authenticated code execution \non the system.","status":"published","published":"2026-02-27T03:30:26Z","modified":"2026-02-27T03:30:33Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T15:06:24.001962Z"}],"nvd":[{"id":"CVE-2026-21718","description":"An authentication bypass vulnerability exists in Copeland XWEB Pro \nversion 1.12.1 and prior, enabling any attackers to bypass the \nauthentication requirement and achieve pre-authenticated code execution \non the system.","status":"published","published":"2026-02-27T01:16:18.073Z","modified":"2026-06-17T10:18:57.993Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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-327"],"updated_at":"2026-11-02T14:12:07.027269Z"}]}}