{"id":"CVE-2021-0428","aliases":["A-173421434","ASB-A-173421434","EUVD-2021-3047","GHSA-5p76-82qh-5gp5"],"status":"published","title":"In getSimSerialNumber of TelephonyManager.java, there is a possible way to read a trackable...","description":"In getSimSerialNumber of TelephonyManager.java, there is a possible way to read a trackable identifier due to a missing permission check. This could lead to local information disclosure with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-173421434","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0012,"percentile":0.01814,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-276","CWE-862"],"published":"2021-04-13T18:20:49Z","modified":"2026-11-05T16:32:28Z","fixes":[{"ecosystem":"Android","package":"platform/frameworks/base","fixed_in":["10:2021-09-01"],"sources":["osv"]},{"ecosystem":"Android","package":"platform/frameworks/opt/telephony","fixed_in":["10:2021-09-01"],"sources":["osv"]},{"ecosystem":"Android","package":"platform/packages/providers/ContactsProvider","fixed_in":["10:2021-09-01"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":"platform/frameworks/base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10:0"},{"fixed":"10:2021-09-01"}]}],"versions":["10"]},{"source":"osv","ecosystem":"Android","package":"platform/frameworks/opt/telephony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10:0"},{"fixed":"10:2021-09-01"}]}],"versions":["10"]},{"source":"osv","ecosystem":"Android","package":"platform/packages/providers/ContactsProvider","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10:0"},{"fixed":"10:2021-09-01"}]}],"versions":["10"]}],"products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/security/bulletin/2021-09-01","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-0428"},{"url":"https://source.android.com/security/bulletin/2021-04-01"},{"url":"https://github.com/advisories/GHSA-5p76-82qh-5gp5"},{"url":"https://android.googlesource.com/platform/frameworks/base/+/1c1bc30ce345f770de44b4348420e860d0958534","tags":["fix"]},{"url":"https://android.googlesource.com/platform/frameworks/base/+/5aba70130d3539fc77cfdfb4b550d8e86acd8a60","tags":["fix"]},{"url":"https://android.googlesource.com/platform/frameworks/base/+/a13fc7f314ac56e75eca09c94db8090f928023ff","tags":["fix"]},{"url":"https://android.googlesource.com/platform/frameworks/opt/telephony/+/640387d310ce6fdfa71f606744eb903bedba57ce","tags":["fix"]},{"url":"https://android.googlesource.com/platform/frameworks/opt/telephony/+/7dfee2e7c3f762d069b8c606f8591498f109ff3e","tags":["fix"]},{"url":"https://android.googlesource.com/platform/frameworks/opt/telephony/+/93d5117cf5f528ec7ed74b4fe2df7ae7e2d207ff","tags":["fix"]},{"url":"https://android.googlesource.com/platform/frameworks/opt/telephony/+/9c392805dc4c5d5c9a95a5dec9c7f65130cd8173","tags":["fix"]},{"url":"https://android.googlesource.com/platform/frameworks/opt/telephony/+/f587f04d306f2faa9e102d9e2de87a403a48638e","tags":["fix"]},{"url":"https://android.googlesource.com/platform/packages/providers/ContactsProvider/+/129cc56868dfc198de41909ff9d6c542a84a4c21","tags":["fix"]}],"sources":{"cve":[{"id":"CVE-2021-0428","description":"In getSimSerialNumber of TelephonyManager.java, there is a possible way to read a trackable identifier due to a missing permission check. This could lead to local information disclosure with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-173421434","status":"published","published":"2021-04-13T18:20:49Z","modified":"2024-08-03T15:40:01.259Z","updated_at":"2026-11-02T14:33:10.887946Z"}],"euvd":[{"id":"EUVD-2021-3047","description":"In getSimSerialNumber of TelephonyManager.java, there is a possible way to read a trackable identifier due to a missing permission check. This could lead to local information disclosure with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-173421434","status":"published","published":"2021-04-13T18:20:49Z","modified":"2024-08-03T15:40:01Z","updated_at":"2026-11-03T03:25:17.553486Z"}],"ghsa":[{"id":"GHSA-5p76-82qh-5gp5","title":"In getSimSerialNumber of TelephonyManager.java, there is a possible way to read a trackable...","description":"In getSimSerialNumber of TelephonyManager.java, there is a possible way to read a trackable identifier due to a missing permission check. This could lead to local information disclosure with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-173421434","status":"published","published":"2022-05-24T17:47:11Z","modified":"2023-01-27T05:02:44Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:42:05.930236Z"}],"nvd":[{"id":"CVE-2021-0428","description":"In getSimSerialNumber of TelephonyManager.java, there is a possible way to read a trackable identifier due to a missing permission check. This could lead to local information disclosure with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-173421434","status":"published","published":"2021-04-13T19:15:12.677Z","modified":"2026-06-17T03:29:58.21Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:06:51.610648Z"}],"osv":[{"id":"ASB-A-173421434","description":"In getSimSerialNumber of TelephonyManager.java, there is a possible way to read a trackable identifier due to a missing permission check. This could lead to local information disclosure with User execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2021-09-01T00:00:00Z","modified":"2026-11-05T16:32:28.703711716Z","updated_at":"2026-11-05T17:55:14.18208Z"}]}}