{"id":"CVE-2026-3950","summary":"strukturag libheif stsz/stts track.cc load out-of-bounds","details":"A vulnerability was identified in strukturag libheif up to 1.21.2. This impacts the function Track::load of the file libheif/sequences/track.cc of the component stsz/stts. The manipulation leads to out-of-bounds read. The attack needs to be performed locally. The exploit is publicly available and might be used. Applying a patch is the recommended action to fix this issue. The patch available is inofficial and not approved yet.","modified":"2026-08-12T03:51:14.163421166Z","published":"2026-03-11T19:02:08.446Z","related":["SUSE-SU-2026:22153-1","SUSE-SU-2026:2622-1","openSUSE-SU-2026:10878-1","openSUSE-SU-2026:20974-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3950.json","cna_assigner":"VulDB","cwe_ids":["CWE-119","CWE-125"]},"references":[{"type":"WEB","url":"https://github.com/strukturag/libheif/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3950.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3950"},{"type":"ADVISORY","url":"https://vuldb.com/?id.350382"},{"type":"ADVISORY","url":"https://vuldb.com/?submit.766431"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/issues/1715"},{"type":"REPORT","url":"https://vuldb.com/?ctiid.350382"},{"type":"FIX","url":"https://github.com/strukturag/libheif/pull/1721"},{"type":"EVIDENCE","url":"https://github.com/Niebelungen-D/pocs/tree/main/heif_dec_sequence_chunk_idx_oob"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/strukturag/libheif","events":[{"introduced":"81b09baa38ac8654d34d0f8b7780c44addfc7893"},{"last_affected":"62f1b8c76ed4d8305071fdacbe74ef9717bacac5"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"1.21.0"},{"last_affected":"1.21.0"},{"introduced":"1.21.1"},{"last_affected":"1.21.1"},{"introduced":"1.21.2"},{"last_affected":"1.21.2"}]}}],"versions":["1.21.0","1.21.1","1.21.2","v1.21.2","v1.21.1","v1.21.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3950.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"}]}