{"id":"CVE-2021-1780","aliases":["EUVD-2021-7244","GHSA-47jr-g6q2-jxrq"],"status":"published","title":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in...","description":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 14.4 and iPadOS 14.4. An attacker in a privileged position may be able to perform a denial of service attack.","severity":{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00259,"percentile":0.17649,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-665"],"published":"2021-04-02T17:58:07Z","modified":"2026-06-17T03:32:32Z","products":[{"vendor":"apple","product":"ios and ipados"},{"vendor":"apple","product":"ipados"},{"vendor":"apple","product":"iphone_os"}],"references":[{"url":"https://support.apple.com/en-us/HT212146","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-1780"},{"url":"https://github.com/advisories/GHSA-47jr-g6q2-jxrq"}],"sources":{"cve":[{"id":"CVE-2021-1780","description":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 14.4 and iPadOS 14.4. An attacker in a privileged position may be able to perform a denial of service attack.","status":"published","published":"2021-04-02T17:58:07Z","modified":"2024-08-03T16:25:05.627Z","updated_at":"2026-11-02T14:33:08.409321Z"}],"euvd":[{"id":"EUVD-2021-7244","description":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 14.4 and iPadOS 14.4. An attacker in a privileged position may be able to perform a denial of service attack.","status":"published","published":"2021-04-02T17:58:07Z","modified":"2024-08-03T16:25:05Z","updated_at":"2026-11-03T03:25:15.150715Z"}],"ghsa":[{"id":"GHSA-47jr-g6q2-jxrq","title":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in...","description":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 14.4 and iPadOS 14.4. An attacker in a privileged position may be able to perform a denial of service attack.","status":"published","published":"2022-05-24T17:46:20Z","modified":"2023-01-29T05:06:14Z","cwes":["CWE-665"],"updated_at":"2026-11-02T14:45:58.601163Z"}],"nvd":[{"id":"CVE-2021-1780","description":"A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 14.4 and iPadOS 14.4. An attacker in a privileged position may be able to perform a denial of service attack.","status":"published","published":"2021-04-02T18:15:21.247Z","modified":"2026-06-17T03:32:32.827Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-665"],"updated_at":"2026-11-02T14:06:51.197859Z"}]}}