{"id":"CVE-2026-97830","aliases":["EUVD-2026-100431","GHSA-x4cr-3wgq-2jqq"],"status":"published","title":"Windows Internet Information Services Denial of Service Vulnerability","description":"Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.","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":"2026-11-11","score":0.01073,"percentile":0.65337,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-415"],"published":"2026-10-13T19:01:40Z","modified":"2026-11-10T20:46:58Z","products":[{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows 11 version 26h2"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_11_26h2"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97830","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97830"},{"url":"https://github.com/advisories/GHSA-x4cr-3wgq-2jqq"}],"sources":{"cve":[{"id":"CVE-2026-97830","title":"Windows Internet Information Services Denial of Service Vulnerability","description":"Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-10-13T19:01:40.304Z","modified":"2026-11-10T20:46:58.581Z","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-415"],"updated_at":"2026-11-10T22:18:30.298108Z"}],"euvd":[{"id":"EUVD-2026-100431","description":"Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-10-13T19:01:40Z","modified":"2026-11-10T20:46:58Z","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":"2026-11-10T22:23:55.284051Z"}],"ghsa":[{"id":"GHSA-x4cr-3wgq-2jqq","title":"Double free in Windows Internet Information Services allows an unauthorized attacker to deny...","description":"Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-10-13T21:37:17Z","modified":"2026-10-13T21:37:19Z","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-415"],"updated_at":"2026-11-02T15:13:20.228797Z"}],"nvd":[{"id":"CVE-2026-97830","description":"Double free in Windows Internet Information Services allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-10-13T19:22:22.557Z","modified":"2026-10-14T20:19:55.197Z","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-415"],"updated_at":"2026-11-02T14:12:58.630796Z"}]}}