{"id":"CVE-2021-30845","aliases":["EUVD-2021-17762","GHSA-hfx3-2rg5-4pq4"],"status":"published","title":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS...","description":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6. A local user may be able to read kernel memory.","severity":{"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":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00257,"percentile":0.1752,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2021-10-19T13:11:48Z","modified":"2026-06-17T03:50:59Z","products":[{"vendor":"apple","product":"macos"}],"references":[{"url":"https://support.apple.com/en-us/HT212804","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-30845"},{"url":"https://github.com/advisories/GHSA-hfx3-2rg5-4pq4"}],"sources":{"cve":[{"id":"CVE-2021-30845","description":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6. A local user may be able to read kernel memory.","status":"published","published":"2021-10-19T13:11:48Z","modified":"2024-08-03T22:48:12.707Z","updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-17762","description":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6. A local user may be able to read kernel memory.","status":"published","published":"2021-10-19T13:11:48Z","modified":"2024-08-03T22:48:12Z","updated_at":"2026-11-03T03:24:40.575187Z"}],"ghsa":[{"id":"GHSA-hfx3-2rg5-4pq4","title":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS...","description":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6. A local user may be able to read kernel memory.","status":"published","published":"2022-05-24T19:17:58Z","modified":"2023-01-30T05:03:07Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:46:46.047512Z"}],"nvd":[{"id":"CVE-2021-30845","description":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6. A local user may be able to read kernel memory.","status":"published","published":"2021-10-19T14:15:09.57Z","modified":"2026-06-17T03:50:59.777Z","cvss":[{"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":"primary"},{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:C/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:07:00.137719Z"}]}}