{"schema":"threatline.record/2","record":{"id":"CVE-2026-83665","aliases":[],"summary":"Windows DHCP Server Denial of Service Vulnerability","details":"Null pointer dereference in Windows DHCP Server allows an unauthorized attacker to deny service over a network.","categories":["Operating systems"],"product":"Windows 10 Version 1607","vendor":"Microsoft","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows 10 Version 1607","vendor":"Microsoft","versions":[{"version":"10.0.14393.0","lessThan":"10.0.14393.9612","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows 10 Version 1809","vendor":"Microsoft","versions":[{"version":"10.0.17763.0","lessThan":"10.0.17763.9376","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows Server 2012","vendor":"Microsoft","versions":[{"version":"6.2.9200.0","lessThan":"6.2.9200.26434","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows Server 2012 (Server Core installation)","vendor":"Microsoft","versions":[{"version":"6.2.9200.0","lessThan":"6.2.9200.26434","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows Server 2012 R2","vendor":"Microsoft","versions":[{"version":"6.3.9600.0","lessThan":"6.3.9600.23470","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows Server 2012 R2 (Server Core installation)","vendor":"Microsoft","versions":[{"version":"6.3.9600.0","lessThan":"6.3.9600.23470","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows Server 2016","vendor":"Microsoft","versions":[{"version":"10.0.14393.0","lessThan":"10.0.14393.9612","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows Server 2016 (Server Core installation)","vendor":"Microsoft","versions":[{"version":"10.0.14393.0","lessThan":"10.0.14393.9612","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows Server 2019","vendor":"Microsoft","versions":[{"version":"10.0.17763.0","lessThan":"10.0.17763.9376","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows Server 2019 (Server Core installation)","vendor":"Microsoft","versions":[{"version":"10.0.17763.0","lessThan":"10.0.17763.9376","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows Server 2022","vendor":"Microsoft","versions":[{"version":"10.0.20348.0","lessThan":"10.0.20348.5761","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows Server 2025","vendor":"Microsoft","versions":[{"version":"10.0.26100.0","lessThan":"10.0.26100.33650","versionType":"custom","status":"affected"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","product":"Windows Server 2025 (Server Core installation)","vendor":"Microsoft","versions":[{"version":"10.0.26100.0","lessThan":"10.0.26100.33650","versionType":"custom","status":"affected"}],"defaultStatus":null}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows 10 Version 1607","ecosystem":null},"version":"10.0.14393.9612","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows 10 Version 1809","ecosystem":null},"version":"10.0.17763.9376","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows Server 2012","ecosystem":null},"version":"6.2.9200.26434","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows Server 2012 (Server Core installation)","ecosystem":null},"version":"6.2.9200.26434","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows Server 2012 R2","ecosystem":null},"version":"6.3.9600.23470","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows Server 2012 R2 (Server Core installation)","ecosystem":null},"version":"6.3.9600.23470","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows Server 2016","ecosystem":null},"version":"10.0.14393.9612","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows Server 2016 (Server Core installation)","ecosystem":null},"version":"10.0.14393.9612","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows Server 2019","ecosystem":null},"version":"10.0.17763.9376","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows Server 2019 (Server Core installation)","ecosystem":null},"version":"10.0.17763.9376","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows Server 2022","ecosystem":null},"version":"10.0.20348.5761","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows Server 2025","ecosystem":null},"version":"10.0.26100.33650","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","source_modified_at":"2026-10-23T22:27:46.702Z","fetched_at":"2026-10-24T00:31:04.721601Z","package":{"name":"Windows Server 2025 (Server Core installation)","ecosystem":null},"version":"10.0.26100.33650","basis":"first unaffected version stated in the CVE record"}],"cvss":7.5,"severity":"High","kev":{"listed":false},"epss":{"probability":0.012,"percentile":0.6797,"score_date":"2026-10-23"},"published_at":"2026-10-13T19:00:50.076Z","modified_at":"2026-10-23T22:27:46.702Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-83665","fetched_at":"2026-10-24T00:31:04.721601Z","source_modified_at":"2026-10-23T22:27:46.702Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-83665","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83665","tags":["vendor-advisory","patch"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-13T22:07:18.093870Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-23T22:27:46.702Z","content_hash":"e1ab7f13d23fae5035314d42c45f8b1d80de8d03f6619c9979178c2875fa1060"}}