{"id":"CVE-2018-4254","aliases":["EUVD-2018-16040","GHSA-5g32-q9gv-9xh4"],"status":"published","title":"In macOS High Sierra before 10.13.5, an input validation issue existed in the kernel. This issue...","description":"In macOS High Sierra before 10.13.5, an input validation issue existed in the kernel. This issue was addressed with improved input validation.","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":"2026-11-09","score":0.01294,"percentile":0.70527,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2019-01-11T18:00:00Z","modified":"2026-06-17T01:58:40Z","products":[{"vendor":"apple","product":"mac_os_x"}],"references":[{"url":"https://support.apple.com/HT208849","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-4254"},{"url":"https://github.com/advisories/GHSA-5g32-q9gv-9xh4"}],"sources":{"cve":[{"id":"CVE-2018-4254","description":"In macOS High Sierra before 10.13.5, an input validation issue existed in the kernel. This issue was addressed with improved input validation.","status":"published","published":"2019-01-11T18:00:00Z","modified":"2024-08-05T05:11:22.149Z","updated_at":"2026-11-02T14:35:08.341767Z"}],"euvd":[{"id":"EUVD-2018-16040","description":"In macOS High Sierra before 10.13.5, an input validation issue existed in the kernel. This issue was addressed with improved input validation.","status":"published","published":"2019-01-11T18:00:00Z","modified":"2024-08-05T05:11:22Z","updated_at":"2026-11-03T02:40:13.563498Z"}],"ghsa":[{"id":"GHSA-5g32-q9gv-9xh4","title":"In macOS High Sierra before 10.13.5, an input validation issue existed in the kernel. This issue...","description":"In macOS High Sierra before 10.13.5, an input validation issue existed in the kernel. This issue was addressed with improved input validation.","status":"published","published":"2022-05-14T01:40:43Z","modified":"2023-02-02T05:04:19Z","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"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:51:50.619018Z"}],"nvd":[{"id":"CVE-2018-4254","description":"In macOS High Sierra before 10.13.5, an input validation issue existed in the kernel. This issue was addressed with improved input validation.","status":"published","published":"2019-01-11T18:29:02.53Z","modified":"2026-06-17T01:58:40.22Z","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":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:04:53.079938Z"}]}}