{"id":"CVE-2021-30900","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-30900","summary":"An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 14.8.1 and iPadOS 14.8.1, iOS 15.1 and iPadOS 15.1. A malicious application may…","details":"An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 14.8.1 and iPadOS 14.8.1, iOS 15.1 and iPadOS 15.1. A malicious application may be able to execute arbitrary code with kernel privileges.","published":"2021-08-24T19:15:18.083","modified":"2026-06-17T03:51:06.180","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":{"score":0.05204,"percentile":0.92059,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT212867"},{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT212868"},{"type":"ADVISORY","url":"https://support.apple.com/kb/HT212872"},{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT212867"},{"type":"ADVISORY","url":"https://support.apple.com/en-us/HT212868"},{"type":"ADVISORY","url":"https://support.apple.com/kb/HT212872"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30900"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-06-17T03:51:06.180"}}