{"id":"CVE-2025-21340","aliases":["EUVD-2025-2405","GHSA-8g2m-ppjp-6hg7"],"status":"published","title":"Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability","description":"Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0046,"percentile":0.40131,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-284"],"published":"2025-01-14T18:04:41Z","modified":"2026-06-17T08:43:08Z","exploits":[{"source":"pocgithub","id":"gduma-phData/patch-CVE-2025-21340","title":"gduma-phData/patch-CVE-2025-21340","date":"2026-08-24","url":"https://github.com/gduma-phData/patch-CVE-2025-21340"}],"products":[{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 22h3"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"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 2022, 23h2 edition (server core installation)"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2022_23h2"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21340","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21340"},{"url":"https://github.com/advisories/GHSA-8g2m-ppjp-6hg7"}],"sources":{"cve":[{"id":"CVE-2025-21340","title":"Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability","description":"Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability","status":"published","published":"2025-01-14T18:04:41.768Z","modified":"2026-06-09T18:29:59.257Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:32:32.30152Z"}],"euvd":[{"id":"EUVD-2025-2405","description":"Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability","status":"published","published":"2025-01-14T18:04:41Z","modified":"2026-06-09T18:29:59Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T18:20:46.299732Z"}],"ghsa":[{"id":"GHSA-8g2m-ppjp-6hg7","title":"Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability","description":"Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability","status":"published","published":"2025-01-14T18:32:05Z","modified":"2025-01-14T18:32:16Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:59:31.239029Z"}],"nvd":[{"id":"CVE-2025-21340","description":"Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability","status":"published","published":"2025-01-14T18:15:59.673Z","modified":"2026-06-17T08:43:08.82Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:10:48.713733Z"}]}}