{"id":"CVE-2021-40576","details":"The binary MP4Box in Gpac 1.0.1 has a null pointer dereference vulnerability in the gf_isom_get_payt_count function in hint_track.c, which allows attackers to cause a denial of service.","modified":"2026-08-03T14:35:19.802181Z","published":"2022-01-13T19:15:08.407Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"1.0.1"},{"last_affected":"1.0.1"}],"source":"CPE_STRING","vendor_product":"gpac:gpac","cpes":["cpe:2.3:a:gpac:gpac:1.0.1:*:*:*:*:*:*:*"]}]},"references":[{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5411"},{"type":"REPORT","url":"https://github.com/gpac/gpac/issues/1904"},{"type":"FIX","url":"https://github.com/gpac/gpac/commit/ad18ece95fa064efc0995c4ab2c985f77fb166ec"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/gpac/gpac","events":[{"introduced":"0"},{"fixed":"ad18ece95fa064efc0995c4ab2c985f77fb166ec"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v1.0.0","v0.9.0","v0.9.0-preview","v0.6.0","v0.5.2"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-40576.json","vanir_signatures_modified":"2026-08-03T14:35:19Z","vanir_signatures":[{"digest":{"function_hash":"64669718982500005998952664897227464772","length":460},"id":"CVE-2021-40576-642b86cc","signature_type":"Function","signature_version":"v1","source":"https://github.com/gpac/gpac/commit/ad18ece95fa064efc0995c4ab2c985f77fb166ec","target":{"file":"src/isomedia/hint_track.c","function":"GetHintFormat"},"deprecated":false},{"deprecated":false,"digest":{"line_hashes":["213132367431935810995875342538304866537","69422952422666335137015309587630551427","154475117685622613766551368937792949715","247987700451396011635532392404281105653"],"threshold":0.9},"id":"CVE-2021-40576-e15d50ed","signature_type":"Line","signature_version":"v1","source":"https://github.com/gpac/gpac/commit/ad18ece95fa064efc0995c4ab2c985f77fb166ec","target":{"file":"src/isomedia/hint_track.c"}}]}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}