{"id":"CVE-2021-0331","aliases":["A-170731783","ASB-A-170731783","EUVD-2021-2950","GHSA-9vc6-7g98-392v"],"status":"published","title":"In onCreate of NotificationAccessConfirmationActivity.java, there is a possible overlay attack...","description":"In onCreate of NotificationAccessConfirmationActivity.java, there is a possible overlay attack due to an insecure default value. This could lead to local escalation of privilege and notification access with User execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11 Android-8.1Android ID: A-170731783","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00287,"percentile":0.21477,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-1021"],"published":"2021-02-01T00:00:00Z","modified":"2026-11-05T16:32:28Z","exploits":[{"source":"pocgithub","id":"Satheesh575555/packages_apps_Settings_AOSP10_r33_CVE-2021-0331","title":"Satheesh575555/packages_apps_Settings_AOSP10_r33_CVE-2021-0331","date":"2022-04-15","url":"https://github.com/Satheesh575555/packages_apps_Settings_AOSP10_r33_CVE-2021-0331"}],"fixes":[{"ecosystem":"Android","package":"platform/packages/apps/Settings","fixed_in":["8.0:2021-02-01","8.1:2021-02-01","9:2021-02-01","10:2021-02-01","11:2021-02-01"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":"platform/packages/apps/Settings","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0:0"},{"fixed":"8.0:2021-02-01"}]}],"versions":["8.0"]},{"source":"osv","ecosystem":"Android","package":"platform/packages/apps/Settings","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.1:0"},{"fixed":"8.1:2021-02-01"}]}],"versions":["8.1"]},{"source":"osv","ecosystem":"Android","package":"platform/packages/apps/Settings","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9:0"},{"fixed":"9:2021-02-01"}]}],"versions":["9"]},{"source":"osv","ecosystem":"Android","package":"platform/packages/apps/Settings","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10:0"},{"fixed":"10:2021-02-01"}]}],"versions":["10"]},{"source":"osv","ecosystem":"Android","package":"platform/packages/apps/Settings","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11:0"},{"fixed":"11:2021-02-01"}]}],"versions":["11"]}],"products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/security/bulletin/2021-02-01","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-0331"},{"url":"https://github.com/advisories/GHSA-9vc6-7g98-392v"},{"url":"https://android.googlesource.com/platform/packages/apps/Settings/+/8cef97cb2bb8a728e5f70644accad1a3306c6d38","tags":["fix"]}],"sources":{"cve":[{"id":"CVE-2021-0331","description":"In onCreate of NotificationAccessConfirmationActivity.java, there is a possible overlay attack due to an insecure default value. This could lead to local escalation of privilege and notification access with User execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11 Android-8.1Android ID: A-170731783","status":"published","published":"2021-02-10T16:49:45Z","modified":"2024-08-03T15:39:59.544Z","updated_at":"2026-11-02T14:33:10.887946Z"}],"euvd":[{"id":"EUVD-2021-2950","description":"In onCreate of NotificationAccessConfirmationActivity.java, there is a possible overlay attack due to an insecure default value. This could lead to local escalation of privilege and notification access with User execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11 Android-8.1Android ID: A-170731783","status":"published","published":"2021-02-10T16:49:45Z","modified":"2024-08-03T15:39:59Z","updated_at":"2026-11-03T03:25:17.997367Z"}],"ghsa":[{"id":"GHSA-9vc6-7g98-392v","title":"In onCreate of NotificationAccessConfirmationActivity.java, there is a possible overlay attack...","description":"In onCreate of NotificationAccessConfirmationActivity.java, there is a possible overlay attack due to an insecure default value. This could lead to local escalation of privilege and notification access with User execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11 Android-8.1Android ID: A-170731783","status":"published","published":"2022-05-24T17:41:44Z","modified":"2023-01-29T05:05:39Z","cwes":["CWE-1021"],"updated_at":"2026-11-02T14:45:50.827495Z"}],"nvd":[{"id":"CVE-2021-0331","description":"In onCreate of NotificationAccessConfirmationActivity.java, there is a possible overlay attack due to an insecure default value. This could lead to local escalation of privilege and notification access with User execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11 Android-8.1Android ID: A-170731783","status":"published","published":"2021-02-10T17:15:20.367Z","modified":"2026-06-17T03:29:48.367Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-1021"],"updated_at":"2026-11-02T14:06:50.031227Z"}],"osv":[{"id":"ASB-A-170731783","description":"In onCreate of NotificationAccessConfirmationActivity.java, there is a possible overlay attack due to an insecure default value. This could lead to local escalation of privilege and notification access with User execution privileges needed. User interaction is needed for exploitation.","status":"published","published":"2021-02-01T00:00:00Z","modified":"2026-11-11T16:12:36.322289056Z","updated_at":"2026-11-10T17:35:04.393608Z"}]}}