ETK-2026-715Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-715",
  "cve_id": null,
  "display_id": "ETK-2026-715",
  "ghsa_id": "GHSA-q7mw-2fmm-5q94",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Out-of-bounds read in libsharpyuv image conversion",
  "summary": "libheif installations using libsharpyuv can read beyond conversion tables while processing 10- or 12-bit image data whose component values exceed the declared bit depth. An attacker able to supply a malformed image, or an application passing unchecked pixel planes to the encoder, may cause a process crash and could influence converted output with nearby process-memory data. Builds without libsharpyuv support and 8- or 16-bit component inputs are not affected by this path.",
  "mitigation": "Upgrade libheif to version 1.23.6 or later. Until it is updated, disable libsharpyuv support or configure conversions to use the average chroma-downsampling algorithm rather than sharp-yuv.",
  "vendor": null,
  "product": "libsharpyuv",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 1.16.0, <= 1.23.5"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "1.23.6"
      ],
      "package_name": null,
      "purl": null
    }
  ],
  "cwes": [
    125
  ],
  "cvss_score": 7.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 28.341140616666667,
  "t0_at": null,
  "signals": {
    "trigger_signal": {
      "at": "2026-10-05T16:39:14+00:00",
      "days": -15.784951888541666,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T11:29:33.866201+00:00",
      "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-q7mw-2fmm-5q94"
    }
  }
}