{"id":"CVE-2021-35306","details":"An issue was discovered in Bento4 through v1.6.0-636. A NULL pointer dereference exists in the function AP4_StszAtom::WriteFields located in Ap4StszAtom.cpp. It allows an attacker to cause a denial of service (DOS).","modified":"2026-04-10T04:35:04.534381Z","published":"2021-08-05T20:15:09.387Z","references":[{"type":"EVIDENCE","url":"https://github.com/axiomatic-systems/Bento4/issues/615"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/axiomatic-systems/bento4","events":[{"introduced":"0"},{"last_affected":"99d7d8cda4f2beb9508948bda44e33fdd5a75c25"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"1.6.0-636"}]}}],"versions":["v1.4.2-584","v1.4.2-586","v1.4.2-587","v1.4.2-588","v1.4.2-589","v1.4.2-590","v1.4.2-591","v1.4.2-592","v1.4.2-593","v1.4.2-594","v1.4.3-595","v1.4.3-596","v1.4.3-597","v1.4.3-598","v1.4.3-599","v1.4.3-600","v1.4.3-601","v1.4.3-602","v1.4.3-603","v1.4.3-604","v1.4.3-605","v1.4.3-606","v1.4.3-607","v1.4.3-608","v1.5.0-609","v1.5.0-610","v1.5.0-611","v1.5.0-612","v1.5.0-613","v1.5.0-615","v1.5.0-616","v1.5.0-617","v1.5.0-618","v1.5.0-619","v1.5.1-620","v1.5.1-621","v1.5.1-622","v1.5.1-623","v1.5.1-624","v1.5.1-626","v1.5.1-629","v1.5.1-630","v1.6.0-635","v1.6.0-636"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-35306.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}