{"id":"CVE-2020-3863","aliases":["EUVD-2020-25128","GHSA-cq5m-4r98-mcfg"],"status":"published","title":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in...","description":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra. An application may be able to execute arbitrary code with system privileges.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.0133,"percentile":0.7128,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-787"],"published":"2020-10-27T20:42:25Z","modified":"2026-06-17T03:19:09Z","products":[{"vendor":"apple","product":"mac_os_x"},{"vendor":"apple","product":"macos"}],"references":[{"url":"https://support.apple.com/en-us/HT210919","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-3863"},{"url":"https://github.com/advisories/GHSA-cq5m-4r98-mcfg"}],"sources":{"cve":[{"id":"CVE-2020-3863","description":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra. An application may be able to execute arbitrary code with system privileges.","status":"published","published":"2020-10-27T20:42:25Z","modified":"2024-08-04T07:44:51.391Z","updated_at":"2026-11-02T14:35:51.923913Z"}],"euvd":[{"id":"EUVD-2020-25128","description":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra. An application may be able to execute arbitrary code with system privileges.","status":"published","published":"2020-10-27T20:42:25Z","modified":"2024-08-04T07:44:51Z","updated_at":"2026-11-03T03:08:08.894885Z"}],"ghsa":[{"id":"GHSA-cq5m-4r98-mcfg","title":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in...","description":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra. An application may be able to execute arbitrary code with system privileges.","status":"published","published":"2022-05-24T17:32:40Z","modified":"2023-01-29T05:05:10Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:45:43.481618Z"}],"nvd":[{"id":"CVE-2020-3863","description":"A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra. An application may be able to execute arbitrary code with system privileges.","status":"published","published":"2020-10-27T21:15:15.087Z","modified":"2026-06-17T03:19:09.84Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:21.80969Z"}]}}