{"id":"CVE-2026-21666","aliases":["EUVD-2026-11574","GHSA-ghcx-4q37-gcrf"],"status":"published","title":"A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on...","description":"A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01288,"percentile":0.7061,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2026-03-12T15:09:39Z","modified":"2026-06-17T10:18:53Z","products":[{"vendor":"veeam","product":"backup and replication"},{"vendor":"veeam","product":"veeam_backup_\\\u0026_replication"}],"references":[{"url":"https://www.veeam.com/kb4830","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21666"},{"url":"https://github.com/advisories/GHSA-ghcx-4q37-gcrf"}],"sources":{"cve":[{"id":"CVE-2026-21666","description":"A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.","status":"published","published":"2026-03-12T15:09:39.18Z","modified":"2026-03-13T03:55:43.772Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T13:41:53.237769Z"}],"euvd":[{"id":"EUVD-2026-11574","description":"A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.","status":"published","published":"2026-03-12T15:09:39Z","modified":"2026-03-13T03:55:43Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:25:35.389351Z"}],"ghsa":[{"id":"GHSA-ghcx-4q37-gcrf","title":"A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on...","description":"A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.","status":"published","published":"2026-03-12T15:30:25Z","modified":"2026-03-12T18:30:30Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:06:35.141921Z"}],"nvd":[{"id":"CVE-2026-21666","description":"A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.","status":"published","published":"2026-03-12T15:16:13.007Z","modified":"2026-06-17T10:18:53.353Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:12:09.358914Z"}]}}