{"id":"CVE-2019-1254","aliases":["EUVD-2019-9820","GHSA-fjpm-pqjx-wj5g"],"status":"published","title":"An information disclosure vulnerability exists when Windows Hyper-V writes uninitialized memory...","description":"An information disclosure vulnerability exists when Windows Hyper-V writes uninitialized memory to disk, aka 'Windows Hyper-V Information Disclosure 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","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01326,"percentile":0.71217,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-908"],"published":"2019-09-11T21:24:59Z","modified":"2026-06-17T02:28:14Z","products":[{"vendor":"microsoft","product":"windows"},{"vendor":"microsoft","product":"windows 10 version 1903 for x64-based systems"},{"vendor":"microsoft","product":"windows server"},{"vendor":"microsoft","product":"windows server, version 1903 (server core installation)"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1254","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-1254"},{"url":"https://github.com/advisories/GHSA-fjpm-pqjx-wj5g"}],"sources":{"cve":[{"id":"CVE-2019-1254","description":"An information disclosure vulnerability exists when Windows Hyper-V writes uninitialized memory to disk, aka 'Windows Hyper-V Information Disclosure Vulnerability'.","status":"published","published":"2019-09-11T21:24:59Z","modified":"2024-08-04T18:13:29.582Z","updated_at":"2026-11-02T14:20:26.034547Z"}],"euvd":[{"id":"EUVD-2019-9820","description":"An information disclosure vulnerability exists when Windows Hyper-V writes uninitialized memory to disk, aka 'Windows Hyper-V Information Disclosure Vulnerability'.","status":"published","published":"2019-09-11T21:24:59Z","modified":"2024-08-04T18:13:29Z","updated_at":"2026-11-03T03:06:58.838317Z"}],"ghsa":[{"id":"GHSA-fjpm-pqjx-wj5g","title":"An information disclosure vulnerability exists when Windows Hyper-V writes uninitialized memory...","description":"An information disclosure vulnerability exists when Windows Hyper-V writes uninitialized memory to disk, aka 'Windows Hyper-V Information Disclosure Vulnerability'.","status":"published","published":"2022-05-24T22:00:31Z","modified":"2023-01-30T05:04:26Z","updated_at":"2026-11-02T14:47:02.705963Z"}],"nvd":[{"id":"CVE-2019-1254","description":"An information disclosure vulnerability exists when Windows Hyper-V writes uninitialized memory to disk, aka 'Windows Hyper-V Information Disclosure Vulnerability'.","status":"published","published":"2019-09-11T22:15:16.397Z","modified":"2026-06-17T02:28:14.753Z","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":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T14:05:28.126831Z"}]}}