{"id":"CVE-2026-45641","published":"2026-06-09T17:04:51Z","modified":"2026-09-24T13:43:52Z","title":"Windows Hyper-V Remote Code Execution Vulnerability","vendor":"Microsoft","product":"Windows 10 Version 21H2","tier":"tail","description":{"text":"Access of resource using incompatible type ('type confusion') in Windows Hyper-V allows an unauthorized attacker to execute code locally.","provenance":"source","from":"CVE.org"},"cvss":{"score":8.4,"severity":"HIGH","version":"3.1","vector":"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","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00307,"percentile":0.23462,"provenance":"source"},"cwes":[{"id":"CWE-843","name":"Access of Resource Using Incompatible Type"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45641","tags":["vendor-advisory","patch"]}],"priority":{"score":10.6,"factors":[{"name":"EPSS percentile","points":4.69},{"name":"CVSS severity","points":5.88}]},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":"Windows 10 Version 21H2","versions":[">= 10.0.19044.0, < 10.0.19044.7417"]},{"vendor":"Microsoft","product":"Windows 10 Version 22H2","versions":[">= 10.0.19045.0, < 10.0.19045.7417"]},{"vendor":"Microsoft","product":"Windows 11 Version 23H2","versions":[">= 10.0.22631.0, < 10.0.22631.7219"]},{"vendor":"Microsoft","product":"Windows 11 Version 24H2","versions":[">= 10.0.26100.0, < 10.0.26100.8655"]},{"vendor":"Microsoft","product":"Windows 11 Version 25H2","versions":[">= 10.0.26200.0, < 10.0.26200.8655"]},{"vendor":"Microsoft","product":"Windows 11 version 26H1","versions":[">= 10.0.28000.0, < 10.0.28000.2269"]},{"vendor":"Microsoft","product":"Windows Server 2022","versions":[">= 10.0.20348.0, < 10.0.20348.5256"]},{"vendor":"Microsoft","product":"Windows Server 2025","versions":[">= 10.0.26100.0, < 10.0.26100.32995"]},{"vendor":"Microsoft","product":"Windows Server 2025 (Server Core installation)","versions":[">= 10.0.26100.0, < 10.0.26100.32995"]}],"euvd":{"id":"EUVD-2026-35687","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-microsoft-windows-cwe-843"}}