{"id":"CVE-2025-21254","aliases":["EUVD-2025-2320","GHSA-hrr3-x5rf-qxxj"],"status":"published","title":"Internet Connection Sharing (ICS) Denial of Service Vulnerability","description":"Internet Connection Sharing (ICS) Denial of Service Vulnerability","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01035,"percentile":0.64316,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2025-02-11T17:58:42Z","modified":"2026-06-17T08:42:54Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 22h3"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"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_10_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"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-2025-21254","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21254"},{"url":"https://github.com/advisories/GHSA-hrr3-x5rf-qxxj"}],"sources":{"cve":[{"id":"CVE-2025-21254","title":"Internet Connection Sharing (ICS) Denial of Service Vulnerability","description":"Internet Connection Sharing (ICS) Denial of Service Vulnerability","status":"published","published":"2025-02-11T17:58:42.817Z","modified":"2026-02-13T19:44:45.775Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:32:32.30152Z"}],"euvd":[{"id":"EUVD-2025-2320","description":"Internet Connection Sharing (ICS) Denial of Service Vulnerability","status":"published","published":"2025-02-11T17:58:42Z","modified":"2026-02-13T19:44:45Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T19:48:38.489604Z"}],"ghsa":[{"id":"GHSA-hrr3-x5rf-qxxj","title":"Internet Connection Sharing (ICS) Denial of Service Vulnerability","description":"Internet Connection Sharing (ICS) Denial of Service Vulnerability","status":"published","published":"2025-02-11T18:31:37Z","modified":"2025-02-11T18:31:38Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:59:53.226964Z"}],"nvd":[{"id":"CVE-2025-21254","description":"Internet Connection Sharing (ICS) Denial of Service Vulnerability","status":"published","published":"2025-02-11T18:15:32.45Z","modified":"2026-06-17T08:42:54.53Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:10:50.916773Z"}]}}