{"id":"CVE-2020-27897","aliases":["EUVD-2020-20390","GHSA-2px2-qp8h-gwrq"],"status":"published","title":"An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in...","description":"An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1. An application may be able to execute arbitrary code with kernel privileges.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00578,"percentile":0.4793,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2021-04-02T17:26:02Z","modified":"2026-06-17T03:09:48Z","products":[{"vendor":"apple","product":"mac_os_x"},{"vendor":"apple","product":"macos"}],"references":[{"url":"https://support.apple.com/en-us/HT211931","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212011","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-486/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27897"},{"url":"https://github.com/advisories/GHSA-2px2-qp8h-gwrq"}],"sources":{"cve":[{"id":"CVE-2020-27897","description":"An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1. An application may be able to execute arbitrary code with kernel privileges.","status":"published","published":"2021-04-02T17:26:02Z","modified":"2024-08-04T16:25:43.651Z","updated_at":"2026-11-02T14:35:53.236501Z"}],"euvd":[{"id":"EUVD-2020-20390","description":"An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1. An application may be able to execute arbitrary code with kernel privileges.","status":"published","published":"2021-04-02T17:26:02Z","modified":"2024-08-04T16:25:43Z","updated_at":"2026-11-03T03:07:11.320494Z"}],"ghsa":[{"id":"GHSA-2px2-qp8h-gwrq","title":"An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in...","description":"An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1. An application may be able to execute arbitrary code with kernel privileges.","status":"published","published":"2022-05-24T17:46:08Z","modified":"2023-01-29T05:07:03Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:46:08.723565Z"}],"nvd":[{"id":"CVE-2020-27897","description":"An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1. An application may be able to execute arbitrary code with kernel privileges.","status":"published","published":"2021-04-02T18:15:15.09Z","modified":"2026-06-17T03:09:48.513Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:37.687844Z"}]}}