{"id":"CVE-2025-21218","aliases":["EUVD-2025-2287","GHSA-vrvf-5hvc-h4g2"],"status":"published","title":"Windows Kerberos Denial of Service Vulnerability","description":"Windows Kerberos Denial of Service Vulnerability","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.02626,"percentile":0.85617,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2025-01-14T18:04:46Z","modified":"2026-06-17T08:42:48Z","products":[{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2022, 23h2 edition (server core installation)"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2022_23h2"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21218","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21218"},{"url":"https://github.com/advisories/GHSA-vrvf-5hvc-h4g2"}],"sources":{"cve":[{"id":"CVE-2025-21218","title":"Windows Kerberos Denial of Service Vulnerability","description":"Windows Kerberos Denial of Service Vulnerability","status":"published","published":"2025-01-14T18:04:46.931Z","modified":"2026-06-09T18:30:10.162Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:32:32.30152Z"}],"euvd":[{"id":"EUVD-2025-2287","description":"Windows Kerberos Denial of Service Vulnerability","status":"published","published":"2025-01-14T18:04:46Z","modified":"2026-06-09T18:30:10Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:20:46.299732Z"}],"ghsa":[{"id":"GHSA-vrvf-5hvc-h4g2","title":"Windows Kerberos Denial of Service Vulnerability","description":"Windows Kerberos Denial of Service Vulnerability","status":"published","published":"2025-01-14T18:32:02Z","modified":"2025-01-14T18:32:12Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:59:30.708513Z"}],"nvd":[{"id":"CVE-2025-21218","description":"Windows Kerberos Denial of Service Vulnerability","status":"published","published":"2025-01-14T18:15:33.37Z","modified":"2026-06-17T08:42:48.187Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:10:48.373347Z"}]}}