{"id":"CVE-2020-1459","aliases":["EUVD-2020-12334","GHSA-cjp5-p4x3-x7jg"],"status":"published","title":"Windows ARM Information Disclosure Vulnerability","description":"An information disclosure vulnerability exists on ARM implementations that use speculative execution in control flow via a side-channel analysis, aka \u0026quot;straight-line speculation.\u0026quot;\nTo exploit this vulnerability, an attacker with local privileges would need to run a specially crafted application.\nThe security update addresses the vulnerability by bypassing the speculative execution.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.04466,"percentile":0.91512,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200","CWE-203"],"published":"2020-08-17T19:13:02Z","modified":"2026-06-17T03:01:27Z","products":[{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 1903 for arm64-based systems"},{"vendor":"microsoft","product":"windows 10 version 1909"},{"vendor":"microsoft","product":"windows 10 version 2004"},{"vendor":"microsoft","product":"windows_10"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1459","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1459"},{"url":"https://github.com/advisories/GHSA-cjp5-p4x3-x7jg"}],"sources":{"cve":[{"id":"CVE-2020-1459","title":"Windows ARM Information Disclosure Vulnerability","description":"An information disclosure vulnerability exists on ARM implementations that use speculative execution in control flow via a side-channel analysis, aka \u0026quot;straight-line speculation.\u0026quot;\nTo exploit this vulnerability, an attacker with local privileges would need to run a specially crafted application.\nThe security update addresses the vulnerability by bypassing the speculative execution.","status":"published","published":"2020-08-17T19:13:02Z","modified":"2024-08-04T06:39:09.644Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:35:56.213477Z"}],"euvd":[{"id":"EUVD-2020-12334","description":"An information disclosure vulnerability exists on ARM implementations that use speculative execution in control flow via a side-channel analysis, aka \u0026quot;straight-line speculation.\u0026quot;\nTo exploit this vulnerability, an attacker with local privileges would need to run a specially crafted application.\nThe security update addresses the vulnerability by bypassing the speculative execution.","status":"published","published":"2020-08-17T19:13:02Z","modified":"2024-08-04T06:39:09Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T03:08:13.874945Z"}],"ghsa":[{"id":"GHSA-cjp5-p4x3-x7jg","title":"An information disclosure vulnerability exists on ARM implementations that use speculative...","description":"An information disclosure vulnerability exists on ARM implementations that use speculative execution in control flow via a side-channel analysis, aka \u0026quot;straight-line speculation, aka 'Windows ARM Information Disclosure Vulnerability'.","status":"published","published":"2022-05-24T17:25:46Z","modified":"2024-01-12T05:08:30Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-200","CWE-203"],"updated_at":"2026-11-02T14:55:24.003446Z"}],"nvd":[{"id":"CVE-2020-1459","description":"An information disclosure vulnerability exists on ARM implementations that use speculative execution in control flow via a side-channel analysis, aka \u0026quot;straight-line speculation.\u0026quot;\nTo exploit this vulnerability, an attacker with local privileges would need to run a specially crafted application.\nThe security update addresses the vulnerability by bypassing the speculative execution.","status":"published","published":"2020-08-17T19:15:14.803Z","modified":"2026-06-17T03:01:27.63Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"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"},{"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-203"],"updated_at":"2026-11-02T14:06:13.05572Z"}]}}