{"id":"CVE-2026-66802","revision":"c5ca852f376b4a4a9a77dc037ab1e2b8","records":[{"revision":"c5ca852f376b4a4a9a77dc037ab1e2b8","observedAt":"2026-11-11T00:21:23.085+00:00","statement":{"source":"cve-program","id":"CVE-2026-66802","aliases":[],"title":"Windows Device Health Attestation (DHA) Remote Code Execution Vulnerability","description":"Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Device Health Attestation (DHA) allows an unauthorized attacker to execute code over a network.","state":0,"publishedAt":"2026-08-11T17:07:00.979+00:00","modifiedAt":"2026-11-10T22:00:49.895+00:00","affected":[{"ecosystem":"Vendor product","name":"Windows 10 Version 1809","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Windows 10 Version 1809\",\n                    \"platforms\": [\n                        \"32-bit Systems\",\n                        \"x64-based Systems\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"10.0.17763.0\",\n                            \"lessThan\": \"10.0.17763.9121\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Windows 11 version 26H1","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Windows 11 version 26H1\",\n                    \"platforms\": [\n                        \"ARM64-based Systems\",\n                        \"x64-based Systems\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"10.0.28000.0\",\n                            \"lessThan\": \"10.0.28000.2704\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Windows Server 2019","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Windows Server 2019\",\n                    \"platforms\": [\n                        \"x64-based Systems\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"10.0.17763.0\",\n                            \"lessThan\": \"10.0.17763.9121\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Windows Server 2019 (Server Core installation)","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Windows Server 2019 (Server Core installation)\",\n                    \"platforms\": [\n                        \"x64-based Systems\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"10.0.17763.0\",\n                            \"lessThan\": \"10.0.17763.9121\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Windows Server 2022","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Windows Server 2022\",\n                    \"platforms\": [\n                        \"x64-based Systems\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"10.0.20348.0\",\n                            \"lessThan\": \"10.0.20348.5499\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Windows Server 2025","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Windows Server 2025\",\n                    \"platforms\": [\n                        \"x64-based Systems\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"10.0.26100.0\",\n                            \"lessThan\": \"10.0.26100.33296\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Windows Server 2025 (Server Core installation)","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Microsoft\",\n                    \"product\": \"Windows Server 2025 (Server Core installation)\",\n                    \"platforms\": [\n                        \"x64-based Systems\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"10.0.26100.0\",\n                            \"lessThan\": \"10.0.26100.33296\",\n                            \"versionType\": \"custom\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","score":8.1,"severity":"HIGH"}],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66802"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-66802","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-66802","identifiers":["CVE-2026-66802"]},"retained":false,"historicalAffected":[]}],"coverage":[]}