{"id":"CVE-2021-39681","aliases":["A-200251074","EUVD-2021-26038","GHSA-f55c-c9jm-8544","PUB-A-200251074"],"status":"published","title":"In delete_protocol of main.c, there is a possible arbitrary code execution due to a use after...","description":"In delete_protocol of main.c, there is a possible arbitrary code execution due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-200251074References: N/A","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00119,"percentile":0.01754,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-416"],"published":"2022-01-01T00:00:00Z","modified":"2026-11-05T16:32:28Z","fixes":[{"ecosystem":"Android","package":":unknown:","fixed_in":["pi:2022-01-05","qt:2022-01-05","rvc:2022-01-05","rvc-qpr:2022-01-05","sc:2022-01-05","sc-v2:2022-01-05"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":":unknown:","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"pi:0"},{"fixed":"pi:2022-01-05"}]}],"versions":["pi"]},{"source":"osv","ecosystem":"Android","package":":unknown:","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"qt:0"},{"fixed":"qt:2022-01-05"}]}],"versions":["qt"]},{"source":"osv","ecosystem":"Android","package":":unknown:","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"rvc:0"},{"fixed":"rvc:2022-01-05"}]}],"versions":["rvc"]},{"source":"osv","ecosystem":"Android","package":":unknown:","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"rvc-qpr:0"},{"fixed":"rvc-qpr:2022-01-05"}]}],"versions":["rvc-qpr"]},{"source":"osv","ecosystem":"Android","package":":unknown:","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"sc:0"},{"fixed":"sc:2022-01-05"}]}],"versions":["sc"]},{"source":"osv","ecosystem":"Android","package":":unknown:","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"sc-v2:0"},{"fixed":"sc-v2:2022-01-05"}]}],"versions":["sc-v2"]}],"products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/security/bulletin/pixel/2022-01-01","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39681"},{"url":"https://github.com/advisories/GHSA-f55c-c9jm-8544"},{"url":"https://source.android.com/security/bulletin/2022-01-01","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-39681","description":"In delete_protocol of main.c, there is a possible arbitrary code execution due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-200251074References: N/A","status":"published","published":"2022-01-14T19:11:16Z","modified":"2024-08-04T02:13:37.669Z","updated_at":"2026-11-02T14:33:09.540052Z"}],"euvd":[{"id":"EUVD-2021-26038","description":"In delete_protocol of main.c, there is a possible arbitrary code execution due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-200251074References: N/A","status":"published","published":"2022-01-14T19:11:16Z","modified":"2024-08-04T02:13:37Z","updated_at":"2026-11-03T03:24:22.709283Z"}],"ghsa":[{"id":"GHSA-f55c-c9jm-8544","title":"In delete_protocol of main.c, there is a possible arbitrary code execution due to a use after...","description":"In delete_protocol of main.c, there is a possible arbitrary code execution due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-200251074References: N/A","status":"published","published":"2022-01-15T00:01:19Z","modified":"2023-02-03T05:04:53Z","cwes":["CWE-416"],"updated_at":"2026-11-02T14:53:38.626767Z"}],"nvd":[{"id":"CVE-2021-39681","description":"In delete_protocol of main.c, there is a possible arbitrary code execution due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-200251074References: N/A","status":"published","published":"2022-01-14T20:15:11.467Z","modified":"2026-06-17T04:03:59.53Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:07:03.821385Z"}],"osv":[{"id":"PUB-A-200251074","description":"In delete_protocol of main.c, there is a possible arbitrary code execution due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2022-01-01T00:00:00Z","modified":"2026-11-10T17:02:23.040266809Z","updated_at":"2026-11-10T17:35:07.907985Z"}]}}