{"id":"CVE-2021-30840","aliases":["EUVD-2021-17757","GHSA-f3p9-xcq6-mf4q"],"status":"published","title":"This issue was addressed with improved checks. This issue is fixed in tvOS 15, watchOS 8, iOS 15...","description":"This issue was addressed with improved checks. This issue is fixed in tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted dfont file may lead to 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":"2026-11-10","score":0.0106,"percentile":0.64833,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-10-28T18:17:14Z","modified":"2026-06-17T03:50:59Z","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/HT212814","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212819","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT212815","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/kb/HT212869","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-30840"},{"url":"https://github.com/advisories/GHSA-f3p9-xcq6-mf4q"}],"sources":{"cve":[{"id":"CVE-2021-30840","description":"This issue was addressed with improved checks. This issue is fixed in tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted dfont file may lead to arbitrary code execution.","status":"published","published":"2021-10-28T18:17:14Z","modified":"2024-08-03T22:48:14.062Z","updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-17757","description":"This issue was addressed with improved checks. This issue is fixed in tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted dfont file may lead to arbitrary code execution.","status":"published","published":"2021-10-28T18:17:14Z","modified":"2024-08-03T22:48:14Z","updated_at":"2026-11-03T03:24:40.575187Z"}],"ghsa":[{"id":"GHSA-f3p9-xcq6-mf4q","title":"This issue was addressed with improved checks. This issue is fixed in tvOS 15, watchOS 8, iOS 15...","description":"This issue was addressed with improved checks. This issue is fixed in tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted dfont file may lead to arbitrary code execution.","status":"published","published":"2022-05-24T19:19:00Z","modified":"2023-01-30T05:03:25Z","updated_at":"2026-11-02T14:46:50.018589Z"}],"nvd":[{"id":"CVE-2021-30840","description":"This issue was addressed with improved checks. This issue is fixed in tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted dfont file may lead to arbitrary code execution.","status":"published","published":"2021-10-28T19:15:09.377Z","modified":"2026-06-17T03:50:59.1Z","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"}],"updated_at":"2026-11-02T14:07:00.549994Z"}]}}