{"id":"CVE-2026-70065","aliases":[],"cve":{"records":[{"id":"CVE-2026-70065","source":"microsoft","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-08-03T23:17:43.744Z","published":"2026-09-08T17:14:01.118Z","modified":"2026-10-30T21:52:26.503Z"}],"publishers":[{"name":"microsoft","role":"CNA","organizationId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","modified":"2026-10-30T21:52:26.503Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-09-08T19:18:19.155Z"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70065","tags":["vendor-advisory","patch"],"source":"microsoft"}],"weaknesses":[{"id":"CWE-401","description":"CWE-401: Missing Release of Memory after Effective Lifetime","source":"microsoft"}],"applicability":[{"source":"microsoft","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*","versionStartIncluding":"10.0.17763.0","versionEndExcluding":"10.0.17763.9245"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.17763.0","versionEndExcluding":"10.0.17763.9245"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.17763.0","versionEndExcluding":"10.0.17763.9245"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.20348.0","versionEndExcluding":"10.0.20348.5622"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.26100.0","versionEndExcluding":"10.0.26100.33438"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.26100.0","versionEndExcluding":"10.0.26100.33438"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*","versionStartIncluding":"10.0.14393.0","versionEndExcluding":"10.0.14393.9512"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.14393.0","versionEndExcluding":"10.0.14393.9512"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.14393.0","versionEndExcluding":"10.0.14393.9512"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*","versionStartIncluding":"6.2.9200.0","versionEndExcluding":"6.2.9200.26349"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*","versionStartIncluding":"6.2.9200.0","versionEndExcluding":"6.2.9200.26349"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*","versionStartIncluding":"6.3.9600.0","versionEndExcluding":"6.3.9600.23398"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*","versionStartIncluding":"6.3.9600.0","versionEndExcluding":"6.3.9600.23398"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-09-08T18:56:00.499356Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Windows DHCP Server Denial of Service Vulnerability","titleSource":"microsoft","descriptionSource":"microsoft","description":"Missing release of memory after effective lifetime in Windows DHCP Server allows an unauthorized attacker to deny service over a network.","score":7.5,"severity":"high","published":"2026-09-08T17:14:01.118Z","modified":"2026-10-30T21:52:26.503Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Microsoft","name":"Windows 10 Version 1607","platforms":["32-bit Systems","x64-based Systems"],"versions":[{"version":"10.0.14393.0","status":"affected","lessThan":"10.0.14393.9512","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"},{"vendor":"Microsoft","name":"Windows 10 Version 1809","platforms":["32-bit Systems","x64-based Systems"],"versions":[{"version":"10.0.17763.0","status":"affected","lessThan":"10.0.17763.9245","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"},{"vendor":"Microsoft","name":"Windows Server 2012","platforms":["x64-based Systems"],"versions":[{"version":"6.2.9200.0","status":"affected","lessThan":"6.2.9200.26349","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"},{"vendor":"Microsoft","name":"Windows Server 2012 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"6.2.9200.0","status":"affected","lessThan":"6.2.9200.26349","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"},{"vendor":"Microsoft","name":"Windows Server 2012 R2","platforms":["x64-based Systems"],"versions":[{"version":"6.3.9600.0","status":"affected","lessThan":"6.3.9600.23398","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"},{"vendor":"Microsoft","name":"Windows Server 2012 R2 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"6.3.9600.0","status":"affected","lessThan":"6.3.9600.23398","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"},{"vendor":"Microsoft","name":"Windows Server 2016","platforms":["x64-based Systems"],"versions":[{"version":"10.0.14393.0","status":"affected","lessThan":"10.0.14393.9512","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"},{"vendor":"Microsoft","name":"Windows Server 2016 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.14393.0","status":"affected","lessThan":"10.0.14393.9512","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"},{"vendor":"Microsoft","name":"Windows Server 2019","platforms":["x64-based Systems"],"versions":[{"version":"10.0.17763.0","status":"affected","lessThan":"10.0.17763.9245","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"},{"vendor":"Microsoft","name":"Windows Server 2019 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.17763.0","status":"affected","lessThan":"10.0.17763.9245","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"},{"vendor":"Microsoft","name":"Windows Server 2022","platforms":["x64-based Systems"],"versions":[{"version":"10.0.20348.0","status":"affected","lessThan":"10.0.20348.5622","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"},{"vendor":"Microsoft","name":"Windows Server 2025","platforms":["x64-based Systems"],"versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.33438","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"},{"vendor":"Microsoft","name":"Windows Server 2025 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.26100.0","status":"affected","lessThan":"10.0.26100.33438","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"}],"remediation":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70065"],"sources":[{"name":"CVE","id":"CVE-2026-70065","modified":"2026-10-30T21:52:26.503Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"}],"assessments":[{"source":"microsoft","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","score":7.5}],"sourceAffected":[],"observedAt":"2026-10-30T22:57:45.077Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T14:10:32.801Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"A denial of service vulnerability in Windows DHCP Server affects various versions of Windows 10 and Windows Server. An unauthorized attacker can deny service over a network due to missing release of memory after effective lifetime. Affected versions include Windows 10 1607, 1809, and Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-31T03:11:05.476Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-70065"}]}}