{
  "affected": [
    {}
  ],
  "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.",
  "id": "CVE-2026-3950",
  "modified": "2026-03-15T21:47:01.821679694Z",
  "published": "2026-03-11T20:16:22.567Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.350382"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.350382"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.766431"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Niebelungen-D/pocs/tree/main/heif_dec_sequence_chunk_idx_oob"
    },
    {
      "type": "WEB",
      "url": "https://github.com/strukturag/libheif/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/strukturag/libheif/issues/1715"
    },
    {
      "type": "FIX",
      "url": "https://github.com/strukturag/libheif/pull/1721"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}