{"id":"CVE-2026-45641","title":"Windows Hyper-V Remote Code Execution Vulnerability","summary":"Access of resource using incompatible type ('type confusion') in Windows Hyper-V allows an unauthorized attacker to execute code locally.","severity":"high","cvss":8.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-843"],"vendor":"Microsoft","product":"Windows 10 Version 21H2","affected":["windows_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7417","windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19045.7417","windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7219","windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.8655","windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.8655","windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2269","windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5256","windows_server_2025 >= 10.0.26100.0 < 10.0.26100.32995","windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.32995"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-06-10T03:57:06.126563Z"},"published":"2026-06-09","updated":"2026-09-24","sourceUpdated":"2026-09-24T13:43:52.296Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45641","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45641","label":"Windows Hyper-V Remote Code Execution Vulnerability"}],"tags":["cve.org"],"epss":0.00307,"epssPercentile":0.23725,"ingestedAt":"2026-09-24T14:44:21.426Z","slug":"CVE-2026-45641","body":"## Overview\n\nAccess of resource using incompatible type ('type confusion') in Windows Hyper-V allows an unauthorized attacker to execute code locally.\n\n## Affected\n\n- `windows_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7417`\n- `windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19045.7417`\n- `windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7219`\n- `windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.8655`\n- `windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.8655`\n- `windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2269`\n- `windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5256`\n- `windows_server_2025 >= 10.0.26100.0 < 10.0.26100.32995`\n- `windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.32995`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":46.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}