{"id":"CVE-2026-65785","aliases":["EUVD-2026-56439","GHSA-r9x2-vg45-q8vq"],"status":"published","title":"Windows DHCP Client Denial of Service Vulnerability","description":"Uncontrolled resource consumption in Windows DHCP Client allows an unauthorized attacker to deny service over an adjacent network.","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":"2026-11-10","score":0.00581,"percentile":0.48108,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2026-08-11T17:05:00Z","modified":"2026-10-30T17:20:43Z","products":[{"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 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65785","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65785"},{"url":"https://github.com/advisories/GHSA-r9x2-vg45-q8vq"}],"sources":{"cve":[{"id":"CVE-2026-65785","title":"Windows DHCP Client Denial of Service Vulnerability","description":"Uncontrolled resource consumption in Windows DHCP Client allows an unauthorized attacker to deny service over an adjacent network.","status":"published","published":"2026-08-11T17:05:00.054Z","modified":"2026-10-30T17:20:43.545Z","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-400"],"updated_at":"2026-11-02T13:37:13.934727Z"}],"euvd":[{"id":"EUVD-2026-56439","description":"Uncontrolled resource consumption in Windows DHCP Client allows an unauthorized attacker to deny service over an adjacent network.","status":"published","published":"2026-08-11T17:05:00Z","modified":"2026-10-30T17:20:43Z","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":"2026-11-02T16:59:04.296921Z"}],"ghsa":[{"id":"GHSA-r9x2-vg45-q8vq","title":"Uncontrolled resource consumption in Windows DHCP Client allows an unauthorized attacker to deny...","description":"Uncontrolled resource consumption in Windows DHCP Client allows an unauthorized attacker to deny service over an adjacent network.","status":"published","published":"2026-08-11T18:31:39Z","modified":"2026-08-11T18:31:40Z","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-400"],"updated_at":"2026-11-02T15:10:20.045782Z"}],"nvd":[{"id":"CVE-2026-65785","description":"Uncontrolled resource consumption in Windows DHCP Client allows an unauthorized attacker to deny service over an adjacent network.","status":"published","published":"2026-08-11T17:18:58.12Z","modified":"2026-08-13T17:07:59.977Z","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-400"],"updated_at":"2026-11-02T14:12:36.880938Z"}]}}