{"id":"CVE-2021-1847","aliases":["EUVD-2021-7311","GHSA-5wj4-3vv6-hr3f"],"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 Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. Opening a maliciously crafted file may lead to unexpected application termination or arbitrary code execution.","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":"2026-11-12","score":0.01055,"percentile":0.6488,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2021-09-08T14:44:40Z","modified":"2026-06-17T03:32:39Z","products":[{"vendor":"apple","product":"mac_os_x"},{"vendor":"apple","product":"macos"}],"references":[{"url":"https://support.apple.com/en-us/HT212325","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212326","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212327","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-1847"},{"url":"https://github.com/advisories/GHSA-5wj4-3vv6-hr3f"}],"sources":{"cve":[{"id":"CVE-2021-1847","description":"A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. Opening a maliciously crafted file may lead to unexpected application termination or arbitrary code execution.","status":"published","published":"2021-09-08T14:44:40Z","modified":"2024-08-03T16:25:05.993Z","updated_at":"2026-11-02T14:33:08.409321Z"}],"euvd":[{"id":"EUVD-2021-7311","description":"A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. Opening a maliciously crafted file may lead to unexpected application termination or arbitrary code execution.","status":"published","published":"2021-09-08T14:44:40Z","modified":"2024-08-03T16:25:05Z","updated_at":"2026-11-03T03:25:14.678157Z"}],"ghsa":[{"id":"GHSA-5wj4-3vv6-hr3f","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 Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. Opening a maliciously crafted file may lead to unexpected application termination or arbitrary code execution.","status":"published","published":"2022-05-24T19:13:34Z","modified":"2023-01-30T05:02:07Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:46:33.666288Z"}],"nvd":[{"id":"CVE-2021-1847","description":"A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave. Opening a maliciously crafted file may lead to unexpected application termination or arbitrary code execution.","status":"published","published":"2021-09-08T15:15:11.05Z","modified":"2026-06-17T03:32:39.61Z","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-787"],"updated_at":"2026-11-02T14:06:58.05696Z"}]}}