{"id":"CVE-2021-39783","aliases":["EUVD-2021-26140","GHSA-38hv-gjp4-4fjh"],"status":"published","title":"In rcsservice, there is a possible way to modify TTY mode due to a missing permission check. This...","description":"In rcsservice, there is a possible way to modify TTY mode due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12LAndroid ID: A-197960597","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":0.00104,"percentile":0.01019,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2022-03-30T16:02:49Z","modified":"2026-06-17T04:04:09Z","products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/security/bulletin/android-12l","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39783"},{"url":"https://github.com/advisories/GHSA-38hv-gjp4-4fjh"}],"sources":{"cve":[{"id":"CVE-2021-39783","description":"In rcsservice, there is a possible way to modify TTY mode due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12LAndroid ID: A-197960597","status":"published","published":"2022-03-30T16:02:49Z","modified":"2024-08-04T02:13:38.346Z","updated_at":"2026-11-02T14:33:09.540052Z"}],"euvd":[{"id":"EUVD-2021-26140","description":"In rcsservice, there is a possible way to modify TTY mode due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12LAndroid ID: A-197960597","status":"published","published":"2022-03-30T16:02:49Z","modified":"2024-08-04T02:13:38Z","updated_at":"2026-11-03T03:24:22.263982Z"}],"ghsa":[{"id":"GHSA-38hv-gjp4-4fjh","title":"In rcsservice, there is a possible way to modify TTY mode due to a missing permission check. This...","description":"In rcsservice, there is a possible way to modify TTY mode due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12LAndroid ID: A-197960597","status":"published","published":"2022-03-31T00:00:17Z","modified":"2023-01-27T05:01:15Z","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"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:41:51.095902Z"}],"nvd":[{"id":"CVE-2021-39783","description":"In rcsservice, there is a possible way to modify TTY mode due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12LAndroid ID: A-197960597","status":"published","published":"2022-03-30T16:15:10.833Z","modified":"2026-06-17T04:04:09.223Z","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-269"],"updated_at":"2026-11-02T14:07:05.581807Z"}]}}