{"id":"CVE-2026-21517","aliases":["EUVD-2026-7308","GHSA-px7f-389h-299v"],"status":"published","title":"Windows App for Mac Installer Elevation of Privilege Vulnerability","description":"Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.","severity":{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00374,"percentile":0.3178,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-59"],"published":"2026-02-10T17:51:15Z","modified":"2026-08-19T16:25:48Z","products":[{"vendor":"microsoft","product":"windows app for mac"},{"vendor":"microsoft","product":"windows_app"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21517","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21517"},{"url":"https://github.com/advisories/GHSA-px7f-389h-299v"}],"sources":{"cve":[{"id":"CVE-2026-21517","title":"Windows App for Mac Installer Elevation of Privilege Vulnerability","description":"Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-02-10T17:51:15.94Z","modified":"2026-08-19T16:25:48.504Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T13:41:42.05254Z"}],"euvd":[{"id":"EUVD-2026-7308","description":"Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-02-10T17:51:15Z","modified":"2026-08-19T16:25:48Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T18:01:44.550802Z"}],"ghsa":[{"id":"GHSA-px7f-389h-299v","title":"Improper link resolution before file access ('link following') in Windows App for Mac allows an...","description":"Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-02-10T18:30:42Z","modified":"2026-02-10T18:30:51Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T15:06:07.875228Z"}],"nvd":[{"id":"CVE-2026-21517","description":"Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-02-10T18:16:34.11Z","modified":"2026-06-17T10:18:46.073Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T14:12:05.908608Z"}]}}