{"id":"CVE-2023-20966","aliases":["A-242299736","ASB-A-242299736","EUVD-2023-25134","GHSA-qf24-5jxm-mf7f"],"status":"published","title":"In inflate of inflate.c, there is a possible out of bounds write due to a heap buffer overflow....","description":"In inflate of inflate.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-242299736","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":0.00099,"percentile":0.00808,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-787"],"published":"2023-03-01T00:00:00Z","modified":"2026-11-05T16:32:28Z","fixes":[{"ecosystem":"Android","package":"platform/external/zlib","fixed_in":["13-next:2023-03-01","11:2023-03-01","12:2023-03-01","12L:2023-03-01","13:2023-03-01"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":"platform/external/zlib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13-next:0"},{"fixed":"13-next:2023-03-01"}]}],"versions":["13-next"]},{"source":"osv","ecosystem":"Android","package":"platform/external/zlib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11:0"},{"fixed":"11:2023-03-01"}]}],"versions":["11"]},{"source":"osv","ecosystem":"Android","package":"platform/external/zlib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"12:0"},{"fixed":"12:2023-03-01"}]}],"versions":["12"]},{"source":"osv","ecosystem":"Android","package":"platform/external/zlib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"12L:0"},{"fixed":"12L:2023-03-01"}]}],"versions":["12L"]},{"source":"osv","ecosystem":"Android","package":"platform/external/zlib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13:0"},{"fixed":"13:2023-03-01"}]}],"versions":["13"]}],"products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/security/bulletin/2023-03-01","tags":["x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-20966"},{"url":"https://github.com/advisories/GHSA-qf24-5jxm-mf7f"},{"url":"https://android.googlesource.com/platform/external/zli+/1c4806afd7ae034aa9f86df35d4341a0b175a90a","tags":["fix"]}],"sources":{"cve":[{"id":"CVE-2023-20966","description":"In inflate of inflate.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-242299736","status":"published","published":"2023-03-24T00:00:00Z","modified":"2025-02-25T21:18:51.938Z","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":"adp"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:35:13.368958Z"}],"euvd":[{"id":"EUVD-2023-25134","description":"In inflate of inflate.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-242299736","status":"published","published":"2023-03-24T00:00:00Z","modified":"2025-02-25T21:18:51Z","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"}],"updated_at":"2026-11-02T20:53:23.677257Z"}],"ghsa":[{"id":"GHSA-qf24-5jxm-mf7f","title":"In inflate of inflate.c, there is a possible out of bounds write due to a heap buffer overflow....","description":"In inflate of inflate.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-242299736","status":"published","published":"2023-03-24T21:30:50Z","modified":"2023-04-05T05:07:25Z","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-787"],"updated_at":"2026-11-02T14:54:26.767421Z"}],"nvd":[{"id":"CVE-2023-20966","description":"In inflate of inflate.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-242299736","status":"published","published":"2023-03-24T20:15:10.477Z","modified":"2026-06-17T05:31:20.247Z","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":"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":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:07:50.908252Z"}],"osv":[{"id":"ASB-A-242299736","description":"In inflate of inflate.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2023-03-01T00:00:00Z","modified":"2026-11-10T17:02:23.040266809Z","updated_at":"2026-11-09T17:04:22.742827Z"}]}}