{"id":"CVE-2021-1794","aliases":["EUVD-2021-7258","GHSA-v24v-2rw9-j2g5"],"status":"published","title":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14...","description":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.02226,"percentile":0.82952,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2021-04-02T18:02:18Z","modified":"2026-06-17T03:32:34Z","products":[{"vendor":"apple","product":"ios and ipados"},{"vendor":"apple","product":"ipad_os"},{"vendor":"apple","product":"iphone_os"}],"references":[{"url":"https://support.apple.com/en-us/HT212146","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-1794"},{"url":"https://github.com/advisories/GHSA-v24v-2rw9-j2g5"}],"sources":{"cve":[{"id":"CVE-2021-1794","description":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution.","status":"published","published":"2021-04-02T18:02:18Z","modified":"2024-08-03T16:25:05.768Z","updated_at":"2026-11-02T14:33:08.409321Z"}],"euvd":[{"id":"EUVD-2021-7258","description":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution.","status":"published","published":"2021-04-02T18:02:18Z","modified":"2024-08-03T16:25:05Z","updated_at":"2026-11-03T03:25:14.678157Z"}],"ghsa":[{"id":"GHSA-v24v-2rw9-j2g5","title":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14...","description":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution.","status":"published","published":"2022-05-24T17:46:22Z","modified":"2023-01-29T05:06:14Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:45:58.601163Z"}],"nvd":[{"id":"CVE-2021-1794","description":"An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution.","status":"published","published":"2021-04-02T19:15:19.21Z","modified":"2026-06-17T03:32:34.533Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:06:51.197859Z"}]}}