{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3950","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2026-03-11T12:02:54.833Z","datePublished":"2026-03-11T19:02:08.446Z","dateUpdated":"2026-03-11T20:24:59.822Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-03-11T19:02:08.446Z"},"title":"strukturag libheif stsz/stts track.cc load out-of-bounds","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-125","lang":"en","description":"Out-of-Bounds Read"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-119","lang":"en","description":"Memory Corruption"}]}],"affected":[{"vendor":"strukturag","product":"libheif","versions":[{"version":"1.21.0","status":"affected"},{"version":"1.21.1","status":"affected"},{"version":"1.21.2","status":"affected"}],"modules":["stsz/stts"]}],"descriptions":[{"lang":"en","value":"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."}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":4.8,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":3.3,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","baseSeverity":"LOW"}},{"cvssV3_0":{"version":"3.0","baseScore":3.3,"vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","baseSeverity":"LOW"}},{"cvssV2_0":{"version":"2.0","baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C"}}],"timeline":[{"time":"2026-03-11T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-03-11T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-03-11T13:08:05.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Niebelungen (VulDB User)","type":"reporter"}],"references":[{"url":"https://vuldb.com/?id.350382","name":"VDB-350382 | strukturag libheif stsz/stts track.cc load out-of-bounds","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.350382","name":"VDB-350382 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.766431","name":"Submit #766431 | strukturag libheif 1.21.2 Out-of-Bounds Read","tags":["third-party-advisory"]},{"url":"https://github.com/strukturag/libheif/issues/1715","tags":["issue-tracking"]},{"url":"https://github.com/Niebelungen-D/pocs/tree/main/heif_dec_sequence_chunk_idx_oob","tags":["exploit"]},{"url":"https://github.com/strukturag/libheif/pull/1721","tags":["issue-tracking","patch"]},{"url":"https://github.com/strukturag/libheif/","tags":["product"]}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-11T20:24:45.324812Z","id":"CVE-2026-3950","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-11T20:24:59.822Z"}}]}}