{"id":"CVE-2026-69809","aliases":["EUVD-2026-73609","GHSA-6x59-3qf7-4cx8"],"status":"published","title":"Windows Active Directory Domain Services Denial of Service Vulnerability","description":"Missing release of memory after effective lifetime in Active Directory Domain 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":0.01174,"percentile":0.67933,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-401"],"published":"2026-09-08T17:16:34Z","modified":"2026-11-10T21:35:36Z","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 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_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69809","tags":["vendor-advisory","patch","Vendor Advisory","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-69809"},{"url":"https://github.com/advisories/GHSA-6x59-3qf7-4cx8"}],"sources":{"cve":[{"id":"CVE-2026-69809","title":"Windows Active Directory Domain Services Denial of Service Vulnerability","description":"Missing release of memory after effective lifetime in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-09-08T17:16:34.042Z","modified":"2026-11-10T21:35:36.635Z","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-401"],"updated_at":"2026-11-10T22:48:53.006191Z"}],"euvd":[{"id":"EUVD-2026-73609","description":"Missing release of memory after effective lifetime in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-09-08T17:16:34Z","modified":"2026-11-10T21:35:36Z","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":"2026-11-10T22:23:48.145704Z"}],"ghsa":[{"id":"GHSA-6x59-3qf7-4cx8","title":"Missing release of memory after effective lifetime in Active Directory Domain Services allows an...","description":"Missing release of memory after effective lifetime in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-09-08T18:33:00Z","modified":"2026-09-08T18:33:10Z","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","level":"high"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T15:11:32.262918Z"}],"nvd":[{"id":"CVE-2026-69809","description":"Missing release of memory after effective lifetime in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-09-08T18:19:52.687Z","modified":"2026-09-24T19:12:06.44Z","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-401"],"updated_at":"2026-11-02T14:12:44.840742Z"}]}}