{"id":"CVE-2026-70097","aliases":["EUVD-2026-99156","GHSA-v7fx-63vf-q5w5"],"status":"published","title":"Windows Virtualization-Based Security (VBS) Enclave Spoofing Vulnerability","description":"Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to perform spoofing locally.","severity":{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00224,"percentile":0.1314,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-362"],"published":"2026-10-13T18:59:37Z","modified":"2026-11-10T20:35:06Z","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 11 version 26h2"},{"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_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_11_26h2"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70097","tags":["vendor-advisory","patch","Vendor Advisory","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70097"},{"url":"https://github.com/advisories/GHSA-v7fx-63vf-q5w5"}],"sources":{"cve":[{"id":"CVE-2026-70097","title":"Windows Virtualization-Based Security (VBS) Enclave Spoofing Vulnerability","description":"Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to perform spoofing locally.","status":"published","published":"2026-10-13T18:59:37.988Z","modified":"2026-11-10T20:35:06.944Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-362"],"updated_at":"2026-11-10T22:18:27.902968Z"}],"euvd":[{"id":"EUVD-2026-99156","description":"Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to perform spoofing locally.","status":"published","published":"2026-10-13T18:59:37Z","modified":"2026-11-10T20:35:06Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T21:23:23.709697Z"}],"ghsa":[{"id":"GHSA-v7fx-63vf-q5w5","title":"Concurrent execution using shared resource with improper synchronization ('race condition') in...","description":"Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to perform spoofing locally.","status":"published","published":"2026-10-13T21:34:04Z","modified":"2026-10-13T21:34:12Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T15:13:15.111505Z"}],"nvd":[{"id":"CVE-2026-70097","description":"Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to perform spoofing locally.","status":"published","published":"2026-10-13T19:19:21.623Z","modified":"2026-10-21T15:14:34.77Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T14:12:57.603498Z"}]}}