{"id":"CVE-2021-30740","aliases":["EUVD-2021-17657","GHSA-267j-fv8q-8h8j"],"status":"published","title":"A logic issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.4,...","description":"A logic issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.4, tvOS 14.6, watchOS 7.5, iOS 14.6 and iPadOS 14.6. A malicious 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:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01462,"percentile":0.73981,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-09-08T13:43:53Z","modified":"2026-06-17T03:50:47Z","products":[{"vendor":"apple","product":"ios and ipados"},{"vendor":"apple","product":"ipados"},{"vendor":"apple","product":"iphone_os"},{"vendor":"apple","product":"macos"},{"vendor":"apple","product":"tvos"},{"vendor":"apple","product":"watchos"}],"references":[{"url":"https://support.apple.com/en-us/HT212528","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212529","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212532","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212533","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-30740"},{"url":"https://github.com/advisories/GHSA-267j-fv8q-8h8j"}],"sources":{"cve":[{"id":"CVE-2021-30740","description":"A logic issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.4, tvOS 14.6, watchOS 7.5, iOS 14.6 and iPadOS 14.6. A malicious application may be able to execute arbitrary code with kernel privileges.","status":"published","published":"2021-09-08T13:43:53Z","modified":"2024-08-03T22:40:32.157Z","updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-17657","description":"A logic issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.4, tvOS 14.6, watchOS 7.5, iOS 14.6 and iPadOS 14.6. A malicious application may be able to execute arbitrary code with kernel privileges.","status":"published","published":"2021-09-08T13:43:53Z","modified":"2024-08-03T22:40:32Z","updated_at":"2026-11-03T03:24:41.017854Z"}],"ghsa":[{"id":"GHSA-267j-fv8q-8h8j","title":"A logic issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.4,...","description":"A logic issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.4, tvOS 14.6, watchOS 7.5, iOS 14.6 and iPadOS 14.6. A malicious application may be able to execute arbitrary code with kernel privileges.","status":"published","published":"2022-05-24T19:13:48Z","modified":"2023-02-02T05:01:14Z","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"}],"updated_at":"2026-11-02T14:51:08.679679Z"}],"nvd":[{"id":"CVE-2021-30740","description":"A logic issue was addressed with improved validation. This issue is fixed in macOS Big Sur 11.4, tvOS 14.6, watchOS 7.5, iOS 14.6 and iPadOS 14.6. A malicious application may be able to execute arbitrary code with kernel privileges.","status":"published","published":"2021-09-08T14:15:09.47Z","modified":"2026-06-17T03:50:47.687Z","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"}],"updated_at":"2026-11-02T14:06:58.05696Z"}]}}