{"id":"CVE-2021-39996","aliases":["EUVD-2021-26352","GHSA-mrvq-2cc4-hffg"],"status":"published","title":"There is a Heap-based buffer overflow vulnerability with the NFC module in smartphones....","description":"There is a Heap-based buffer overflow vulnerability with the NFC module in smartphones. Successful exploitation of this vulnerability may cause memory overflow.","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":0.00871,"percentile":0.59251,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2022-01-07T22:39:49Z","modified":"2026-06-17T04:04:32Z","products":[{"vendor":"huawei","product":"emui"},{"vendor":"huawei","product":"harmonyos"},{"vendor":"huawei","product":"magic_ui"}],"references":[{"url":"https://device.harmonyos.com/en/docs/security/update/security-bulletins-202112-0000001183296718","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://consumer.huawei.com/en/support/bulletin/2021/12/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39996"},{"url":"https://github.com/advisories/GHSA-mrvq-2cc4-hffg"}],"sources":{"cve":[{"id":"CVE-2021-39996","description":"There is a Heap-based buffer overflow vulnerability with the NFC module in smartphones. Successful exploitation of this vulnerability may cause memory overflow.","status":"published","published":"2022-01-07T22:39:49Z","modified":"2024-08-04T02:20:34.172Z","updated_at":"2026-11-02T14:33:09.540052Z"}],"euvd":[{"id":"EUVD-2021-26352","description":"There is a Heap-based buffer overflow vulnerability with the NFC module in smartphones. Successful exploitation of this vulnerability may cause memory overflow.","status":"published","published":"2022-01-07T22:39:49Z","modified":"2024-08-04T02:20:34Z","updated_at":"2026-11-03T03:24:21.810275Z"}],"ghsa":[{"id":"GHSA-mrvq-2cc4-hffg","title":"There is a Heap-based buffer overflow vulnerability with the NFC module in smartphones....","description":"There is a Heap-based buffer overflow vulnerability with the NFC module in smartphones. Successful exploitation of this vulnerability may cause memory overflow.","status":"published","published":"2022-01-11T00:01:30Z","modified":"2023-02-03T05:04:32Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:53:34.195392Z"}],"nvd":[{"id":"CVE-2021-39996","description":"There is a Heap-based buffer overflow vulnerability with the NFC module in smartphones. Successful exploitation of this vulnerability may cause memory overflow.","status":"published","published":"2022-01-10T14:10:20.823Z","modified":"2026-06-17T04:04:32.28Z","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-787"],"updated_at":"2026-11-02T14:07:03.418194Z"}]}}