{"id":"CVE-2021-30983","aliases":["EUVD-2021-17900"],"status":"published","title":"Apple iOS and iPadOS Buffer Overflow Vulnerability","description":"A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 15.2 and iPadOS 15.2. An 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":0.02923,"percentile":0.87244,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-120"],"published":"2021-08-24T18:51:21Z","modified":"2026-06-17T03:51:15Z","kev":{"date_added":"2022-06-27","due_date":"2022-07-18","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2022-06-27"},{"source":"kev","since":"2022-06-27"}],"products":[{"vendor":"apple","product":"ios and ipados"},{"vendor":"apple","product":"ipados"},{"vendor":"apple","product":"iphone_os"}],"references":[{"url":"https://support.apple.com/en-us/HT212976","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30983","tags":["government-resource","US Government Resource"]}],"sources":{"cve":[{"id":"CVE-2021-30983","description":"A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 15.2 and iPadOS 15.2. An application may be able to execute arbitrary code with kernel privileges.","status":"published","published":"2021-08-24T18:51:21Z","modified":"2025-10-21T23:25:36.448Z","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":"adp"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:33:02.20241Z"}],"euvd":[{"id":"EUVD-2021-17900","description":"A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 15.2 and iPadOS 15.2. An application may be able to execute arbitrary code with kernel privileges.","status":"published","published":"2021-08-24T18:51:21Z","modified":"2025-10-21T23:25:36Z","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"}],"exploited_since":"2022-06-27","updated_at":"2026-11-02T20:31:25.901288Z"}],"kev":[{"id":"CVE-2021-30983","title":"Apple iOS and iPadOS Buffer Overflow Vulnerability","description":"Apple iOS and iPadOS contain a buffer overflow vulnerability that could allow an application to execute code with kernel privileges.","cwes":["CWE-119"],"kev":{"date_added":"2022-06-27","due_date":"2022-07-18","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:16.234141Z"}],"nvd":[{"id":"CVE-2021-30983","description":"A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 15.2 and iPadOS 15.2. An application may be able to execute arbitrary code with kernel privileges.","status":"published","published":"2021-08-24T19:15:23.507Z","modified":"2026-06-17T03:51:15.6Z","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":"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":"secondary"},{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:06:57.318236Z"}]}}