{"id":"CVE-2020-3877","aliases":["EUVD-2020-25142","GHSA-j8jm-xpp4-34xm"],"status":"published","title":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS...","description":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3, watchOS 6.1.2. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.02047,"percentile":0.81464,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2020-02-27T20:45:05Z","modified":"2026-06-17T03:19:11Z","products":[{"vendor":"apple","product":"mac_os_x"},{"vendor":"apple","product":"macos"},{"vendor":"apple","product":"watchos"}],"references":[{"url":"https://support.apple.com/HT210919","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/HT210921","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-3877"},{"url":"https://github.com/advisories/GHSA-j8jm-xpp4-34xm"}],"sources":{"cve":[{"id":"CVE-2020-3877","description":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3, watchOS 6.1.2. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.","status":"published","published":"2020-02-27T20:45:05Z","modified":"2024-08-04T07:44:51.408Z","updated_at":"2026-11-02T14:35:51.563355Z"}],"euvd":[{"id":"EUVD-2020-25142","description":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3, watchOS 6.1.2. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.","status":"published","published":"2020-02-27T20:45:05Z","modified":"2024-08-04T07:44:51Z","updated_at":"2026-11-03T03:08:08.458165Z"}],"ghsa":[{"id":"GHSA-j8jm-xpp4-34xm","title":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS...","description":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3, watchOS 6.1.2. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.","status":"published","published":"2022-05-24T17:09:49Z","modified":"2023-01-29T05:01:40Z","updated_at":"2026-11-02T14:44:53.095202Z"}],"nvd":[{"id":"CVE-2020-3877","description":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.3, watchOS 6.1.2. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.","status":"published","published":"2020-02-27T21:15:18.787Z","modified":"2026-06-17T03:19:11.34Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:05:54.796125Z"}]}}