CVE-2026-84444

{
  "etk_id": "ETK-2026-177",
  "cve_id": "CVE-2026-84444",
  "display_id": "CVE-2026-84444",
  "ghsa_id": "GHSA-j264-xvrp-5v7q",
  "euvd_id": "EUVD-2026-83020",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Heap overflow in libheif uncompressed tiled-image encoding",
  "summary": "libheif versions before 1.23.2 can write beyond a heap buffer while adding tiles to uncompressed tiled images. An attacker or caller able to submit mismatched component-plane dimensions through the tile API may trigger the flaw when the uncompressed codec is enabled.",
  "mitigation": "Upgrade libheif to version 1.23.2 or later. Disable the uncompressed codec where it is not required until upgrades are complete.",
  "vendor": "strukturag",
  "product": "libheif",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 1.23.1"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "1.23.2"
      ],
      "package_name": "libheif",
      "purl": null
    }
  ],
  "cwes": [
    787
  ],
  "cvss_score": 7.4,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H",
  "epss_score": 0.0048,
  "epss_percentile": 0.3993,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 28.120047516666666,
  "t0_at": "2026-09-18T15:56:41.773000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-09-18T15:56:41.773000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-18T15:56:41.773000+00:00",
      "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-j264-xvrp-5v7q"
    }
  }
}