{"id":"CVE-2026-96864","aliases":["EUVD-2026-99786","GHSA-7qc5-w88m-3mgj"],"status":"published","title":"Microsoft Failover Cluster Virtual Driver Remote Code Execution Vulnerability","description":"Double free in Microsoft Failover Cluster Virtual Driver allows an unauthorized attacker to execute code over a network.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00634,"percentile":0.50665,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-415"],"published":"2026-10-13T19:00:34Z","modified":"2026-10-31T18:07:09Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96864","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96864"},{"url":"https://github.com/advisories/GHSA-7qc5-w88m-3mgj"}],"sources":{"cve":[{"id":"CVE-2026-96864","title":"Microsoft Failover Cluster Virtual Driver Remote Code Execution Vulnerability","description":"Double free in Microsoft Failover Cluster Virtual Driver allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:00:34.732Z","modified":"2026-10-31T18:07:09.063Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:20:00.511569Z"}],"euvd":[{"id":"EUVD-2026-99786","description":"Double free in Microsoft Failover Cluster Virtual Driver allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:00:34Z","modified":"2026-10-31T18:07:09Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-02T16:58:53.072245Z"}],"ghsa":[{"id":"GHSA-7qc5-w88m-3mgj","title":"Double free in Microsoft Failover Cluster Virtual Driver allows an unauthorized attacker to...","description":"Double free in Microsoft Failover Cluster Virtual Driver allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T21:37:03Z","modified":"2026-10-13T21:37:09Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T15:13:19.647865Z"}],"nvd":[{"id":"CVE-2026-96864","description":"Double free in Microsoft Failover Cluster Virtual Driver allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:22:00.717Z","modified":"2026-10-28T16:51:08.48Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:12:58.630796Z"}]}}