{"id":"CVE-2021-0519","aliases":["A-176533109","ASB-A-176533109","EUVD-2021-3138","GHSA-3x4v-r279-87fr"],"status":"published","title":"In BITSTREAM_FLUSH of ih264e_bitstream.h, there is a possible out of bounds write due to a heap...","description":"In BITSTREAM_FLUSH of ih264e_bitstream.h, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-8.1 Android-9Android ID: A-176533109","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":"2026-11-11","score":0.00241,"percentile":0.15306,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-787"],"published":"2021-08-01T00:00:00Z","modified":"2026-11-05T16:32:28Z","exploits":[{"source":"pocgithub","id":"nanopathi/external_libavc_AOSP10_r33_CVE-2021-0519","title":"nanopathi/external_libavc_AOSP10_r33_CVE-2021-0519","date":"2022-04-21","url":"https://github.com/nanopathi/external_libavc_AOSP10_r33_CVE-2021-0519"}],"fixes":[{"ecosystem":"Android","package":"platform/external/libavc","fixed_in":["8.1:2021-08-01","9:2021-08-01","10:2021-08-01","11:2021-08-01"],"sources":["osv"]},{"ecosystem":"Android","package":"platform/frameworks/av","fixed_in":["10:2021-08-01"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":"platform/external/libavc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.1:0"},{"fixed":"8.1:2021-08-01"}]}],"versions":["8.1"]},{"source":"osv","ecosystem":"Android","package":"platform/external/libavc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9:0"},{"fixed":"9:2021-08-01"}]}],"versions":["9"]},{"source":"osv","ecosystem":"Android","package":"platform/external/libavc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10:0"},{"fixed":"10:2021-08-01"}]}],"versions":["10"]},{"source":"osv","ecosystem":"Android","package":"platform/frameworks/av","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10:0"},{"fixed":"10:2021-08-01"}]}],"versions":["10"]},{"source":"osv","ecosystem":"Android","package":"platform/external/libavc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11:0"},{"fixed":"11:2021-08-01"}]}],"versions":["11"]}],"products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/security/bulletin/2021-08-01","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-0519"},{"url":"https://github.com/advisories/GHSA-3x4v-r279-87fr"},{"url":"https://android.googlesource.com/platform/external/libavc/+/10910bf9106eff724390255faa48f9f61dcfc744","tags":["fix"]}],"sources":{"cve":[{"id":"CVE-2021-0519","description":"In BITSTREAM_FLUSH of ih264e_bitstream.h, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-8.1 Android-9Android ID: A-176533109","status":"published","published":"2021-08-17T18:28:07Z","modified":"2024-08-03T15:40:01.132Z","updated_at":"2026-11-02T14:33:10.887946Z"}],"euvd":[{"id":"EUVD-2021-3138","description":"In BITSTREAM_FLUSH of ih264e_bitstream.h, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-8.1 Android-9Android ID: A-176533109","status":"published","published":"2021-08-17T18:28:07Z","modified":"2024-08-03T15:40:01Z","updated_at":"2026-11-03T03:25:16.987587Z"}],"ghsa":[{"id":"GHSA-3x4v-r279-87fr","title":"In BITSTREAM_FLUSH of ih264e_bitstream.h, there is a possible out of bounds write due to a heap...","description":"In BITSTREAM_FLUSH of ih264e_bitstream.h, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-8.1 Android-9Android ID: A-176533109","status":"published","published":"2022-05-24T19:11:25Z","modified":"2023-01-30T05:01:34Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:46:26.483285Z"}],"nvd":[{"id":"CVE-2021-0519","description":"In BITSTREAM_FLUSH of ih264e_bitstream.h, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-8.1 Android-9Android ID: A-176533109","status":"published","published":"2021-08-17T19:15:07.317Z","modified":"2026-06-17T03:30:14.38Z","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":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:56.943671Z"}],"osv":[{"id":"ASB-A-176533109","description":"In BITSTREAM_FLUSH of ih264e_bitstream.h, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2021-08-01T00:00:00Z","modified":"2026-11-10T17:02:23.040266809Z","updated_at":"2026-11-10T17:35:04.393608Z"}]}}