{"id":"CVE-2020-9853","aliases":["EUVD-2020-30632","GHSA-qw5w-44g5-x7m4"],"status":"published","title":"A memory corruption issue was addressed with improved validation. This issue is fixed in macOS...","description":"A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Catalina 10.15.4. A malicious application may be able to determine kernel memory layout.","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":0.00791,"percentile":0.56608,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-20","CWE-787"],"published":"2020-10-22T17:53:45Z","modified":"2026-06-17T03:28:41Z","products":[{"vendor":"apple","product":"mac_os_x"},{"vendor":"apple","product":"macos"}],"references":[{"url":"https://support.apple.com/kb/HT211100","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9853"},{"url":"https://github.com/advisories/GHSA-qw5w-44g5-x7m4"}],"sources":{"cve":[{"id":"CVE-2020-9853","description":"A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Catalina 10.15.4. A malicious application may be able to determine kernel memory layout.","status":"published","published":"2020-10-22T17:53:45Z","modified":"2024-08-04T10:43:05.399Z","updated_at":"2026-11-02T14:35:49.209579Z"}],"euvd":[{"id":"EUVD-2020-30632","description":"A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Catalina 10.15.4. A malicious application may be able to determine kernel memory layout.","status":"published","published":"2020-10-22T17:53:45Z","modified":"2024-08-04T10:43:05Z","updated_at":"2026-11-03T03:07:52.605769Z"}],"ghsa":[{"id":"GHSA-qw5w-44g5-x7m4","title":"A memory corruption issue was addressed with improved validation. This issue is fixed in macOS...","description":"A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Catalina 10.15.4. A malicious application may be able to determine kernel memory layout.","status":"published","published":"2022-05-24T17:32:03Z","modified":"2023-01-29T05:04:28Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:45:33.67375Z"}],"nvd":[{"id":"CVE-2020-9853","description":"A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Catalina 10.15.4. A malicious application may be able to determine kernel memory layout.","status":"published","published":"2020-10-22T18:15:13.83Z","modified":"2026-06-17T03:28:41.173Z","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":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20","CWE-787"],"updated_at":"2026-11-02T14:06:20.704992Z"}]}}