{"id":"CVE-2021-0556","aliases":["A-172716941","EUVD-2021-3175","GHSA-c448-842q-vf3p","PUB-A-172716941"],"status":"published","title":"In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read due to a heap buffer...","description":"In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read 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-11Android ID: A-172716941","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":"2026-11-10","score":0.00121,"percentile":0.01883,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2021-06-01T00:00:00Z","modified":"2026-11-05T16:32:28Z","fixes":[{"ecosystem":"Android","package":"platform/frameworks/av","fixed_in":["11:2021-06-01"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":"platform/frameworks/av","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11:0"},{"fixed":"11:2021-06-01"}]}],"versions":["11"]}],"products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/security/bulletin/pixel/2021-06-01","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-0556"},{"url":"https://github.com/advisories/GHSA-c448-842q-vf3p"},{"url":"https://source.android.com/security/bulletin/2021-06-01","tags":["advisory"]},{"url":"https://android.googlesource.com/platform/frameworks/av/+/4a8f9e81f1a3a68997640901c9609ac4aea70f8b","tags":["fix"]}],"sources":{"cve":[{"id":"CVE-2021-0556","description":"In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read 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-11Android ID: A-172716941","status":"published","published":"2021-06-22T10:59:51Z","modified":"2024-08-03T15:47:27.842Z","updated_at":"2026-11-02T14:33:10.887946Z"}],"euvd":[{"id":"EUVD-2021-3175","description":"In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read 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-11Android ID: A-172716941","status":"published","published":"2021-06-22T10:59:51Z","modified":"2024-08-03T15:47:27Z","updated_at":"2026-11-03T03:25:16.987587Z"}],"ghsa":[{"id":"GHSA-c448-842q-vf3p","title":"In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read due to a heap buffer...","description":"In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read 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-11Android ID: A-172716941","status":"published","published":"2022-05-24T19:05:57Z","modified":"2023-01-29T05:06:36Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:46:03.953317Z"}],"nvd":[{"id":"CVE-2021-0556","description":"In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read 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-11Android ID: A-172716941","status":"published","published":"2021-06-22T11:15:08.253Z","modified":"2026-06-17T03:30:18.457Z","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-125"],"updated_at":"2026-11-02T14:06:54.892562Z"}],"osv":[{"id":"PUB-A-172716941","description":"In getBlockSum of fastcodemb.cpp, there is a possible out of bounds read 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":"2021-06-01T00:00:00Z","modified":"2026-11-10T17:02:23.040266809Z","updated_at":"2026-11-09T17:05:18.698671Z"}]}}