{"id":"CVE-2016-3067","aliases":["EUVD-2016-4140","GHSA-q582-cxmf-6cxr"],"status":"published","title":"Cygwin before 2.5.0 does not properly handle updating permissions when changing users, which...","description":"Cygwin before 2.5.0 does not properly handle updating permissions when changing users, which allows attackers to gain privileges.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0204,"percentile":0.81259,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-264"],"published":"2017-04-21T20:00:00Z","modified":"2026-10-24T10:30:27Z","products":[{"vendor":"cygwin","product":"cygwin"}],"references":[{"url":"https://cygwin.com/ml/cygwin-announce/2016-04/msg00020.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Release Notes","Vendor Advisory","advisory"]},{"url":"https://cygwin.com/ml/cygwin-announce/2016-04/msg00054.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Release Notes","Vendor Advisory","advisory"]},{"url":"https://cygwin.com/ml/cygwin/2016-02/msg00129.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Release Notes","Vendor Advisory","advisory"]},{"url":"https://cygwin.com/ml/cygwin-announce/2016-02/msg00023.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Release Notes","Vendor Advisory","advisory"]},{"url":"https://sourceware.org/git/?p=newlib-cygwin.git%3Ba=commit%3Bh=205862ed08649df8f50b926a2c58c963f571b044","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-3067"},{"url":"https://sourceware.org/git/?p=newlib-cygwin.git;a=commit;h=205862ed08649df8f50b926a2c58c963f571b044"},{"url":"https://github.com/advisories/GHSA-q582-cxmf-6cxr"}],"sources":{"cve":[{"id":"CVE-2016-3067","description":"Cygwin before 2.5.0 does not properly handle updating permissions when changing users, which allows attackers to gain privileges.","status":"published","published":"2017-04-21T20:00:00Z","modified":"2024-08-05T23:40:15.116Z","updated_at":"2026-11-02T14:33:33.758954Z"}],"euvd":[{"id":"EUVD-2016-4140","description":"Cygwin before 2.5.0 does not properly handle updating permissions when changing users, which allows attackers to gain privileges.","status":"published","published":"2017-04-21T20:00:00Z","modified":"2024-08-05T23:40:15Z","updated_at":"2026-11-03T02:22:51.132305Z"}],"ghsa":[{"id":"GHSA-q582-cxmf-6cxr","title":"Cygwin before 2.5.0 does not properly handle updating permissions when changing users, which...","description":"Cygwin before 2.5.0 does not properly handle updating permissions when changing users, which allows attackers to gain privileges.","status":"published","published":"2022-05-17T02:47:51Z","modified":"2025-04-20T03:37:32Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:01:45.195531Z"}],"nvd":[{"id":"CVE-2016-3067","description":"Cygwin before 2.5.0 does not properly handle updating permissions when changing users, which allows attackers to gain privileges.","status":"published","published":"2017-04-21T20:59:00.633Z","modified":"2026-06-17T00:44:54.333Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:03:37.619685Z"}],"osv":[{"id":"CVE-2016-3067","description":"Cygwin before 2.5.0 does not properly handle updating permissions when changing users, which allows attackers to gain privileges.","status":"published","published":"2017-04-21T20:59:00.633Z","modified":"2026-10-24T10:30:27.277071875Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:02.114472Z"}]}}