{"id":"CVE-2021-33815","details":"dwa_uncompress in libavcodec/exr.c in FFmpeg 4.4 allows an out-of-bounds array access because dc_count is not strictly checked.","modified":"2026-08-17T05:26:17.202273Z","published":"2021-06-03T17:15:15.073Z","related":["openSUSE-SU-2024:10754-1"],"references":[{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202312-14"},{"type":"FIX","url":"https://github.com/FFmpeg/FFmpeg/commit/26d3c81bc5ef2f8c3f09d45eaeacfb4b1139a777"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.ffmpeg.org/ffmpeg.git","events":[{"introduced":"c5079bf3bccd24bf8ed45ff47ff4071fd09e9fd8"},{"last_affected":"c5079bf3bccd24bf8ed45ff47ff4071fd09e9fd8"}],"database_specific":{"cpe":"cpe:2.3:a:ffmpeg:ffmpeg:4.4:*:*:*:*:*:*:*","extracted_events":[{"introduced":"4.4"},{"last_affected":"4.4"}],"source":"CPE_STRING"}}],"versions":["4.4","n4.4-dev"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33815.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/ffmpeg/ffmpeg","events":[{"introduced":"c5079bf3bccd24bf8ed45ff47ff4071fd09e9fd8"},{"last_affected":"c5079bf3bccd24bf8ed45ff47ff4071fd09e9fd8"},{"fixed":"26d3c81bc5ef2f8c3f09d45eaeacfb4b1139a777"}],"database_specific":{"cpe":"cpe:2.3:a:ffmpeg:ffmpeg:4.4:*:*:*:*:*:*:*","extracted_events":[{"introduced":"4.4"},{"last_affected":"4.4"}],"source":["CPE_STRING","REFERENCES"]}}],"versions":["4.4","n4.5-dev","n4.4-dev"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33815.json","vanir_signatures_modified":"2026-08-17T05:26:17Z","vanir_signatures":[{"deprecated":false,"digest":{"line_hashes":["196709895360287458591615415705214410396","130380091940095792286365522484884190871","283493446620991118859812463275249449165","19386626409520732559976923280123000466","88974277760846921266435675601066312401","66708020939852844078050880899189869910","215846995322117982697734546612735061643"],"threshold":0.9},"id":"CVE-2021-33815-92de094f","signature_type":"Line","signature_version":"v1","source":"https://github.com/ffmpeg/ffmpeg/commit/26d3c81bc5ef2f8c3f09d45eaeacfb4b1139a777","target":{"file":"libavcodec/exr.c"}},{"signature_type":"Function","signature_version":"v1","source":"https://github.com/ffmpeg/ffmpeg/commit/26d3c81bc5ef2f8c3f09d45eaeacfb4b1139a777","target":{"file":"libavcodec/exr.c","function":"dwa_uncompress"},"deprecated":false,"digest":{"function_hash":"285466867490307915643097296913297550466","length":5286},"id":"CVE-2021-33815-d2c1e13a"}]}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}