{"id":"CVE-2018-4256","aliases":["EUVD-2018-16042","GHSA-v885-9h3j-rhmg"],"status":"published","title":"In macOS High Sierra before 10.13.5, an out-of-bounds read was addressed with improved input...","description":"In macOS High Sierra before 10.13.5, an out-of-bounds read was addressed with improved input validation.","severity":{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00293,"percentile":0.2201,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"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-2018-4256"},{"url":"https://github.com/advisories/GHSA-v885-9h3j-rhmg"}],"sources":{"cve":[{"id":"CVE-2018-4256","description":"In macOS High Sierra before 10.13.5, an out-of-bounds read was addressed with improved input validation.","status":"published","published":"2019-01-11T18:00:00Z","modified":"2024-08-05T05:11:22.274Z","updated_at":"2026-11-02T14:35:08.341767Z"}],"euvd":[{"id":"EUVD-2018-16042","description":"In macOS High Sierra before 10.13.5, an out-of-bounds read 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-v885-9h3j-rhmg","title":"In macOS High Sierra before 10.13.5, an out-of-bounds read was addressed with improved input...","description":"In macOS High Sierra before 10.13.5, an out-of-bounds read was addressed with improved input validation.","status":"published","published":"2022-05-14T01:40:29Z","modified":"2023-02-02T05:04:06Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:51:47.403205Z"}],"nvd":[{"id":"CVE-2018-4256","description":"In macOS High Sierra before 10.13.5, an out-of-bounds read was addressed with improved input validation.","status":"published","published":"2019-01-11T18:29:02.61Z","modified":"2026-06-17T01:58:40.417Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/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-125"],"updated_at":"2026-11-02T14:04:53.079938Z"}]}}