{
  "cveId": "CVE-2026-44663",
  "url": "https://patchblox.com/security/cve/CVE-2026-44663",
  "summary": "CVE-2026-44663 is fixed in openexr on 1 platform by DEBIAN-CVE-2026-44663 (version 3.4.14-0.1), released June 18, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "openexr: OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture...",
  "description": "OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.11, an integer overflow in ht_undo_impl() in src/lib/OpenEXRCore/internal_ht.cpp leads to a heap-buffer overflow when decoding a crafted HTJ2K-compressed EXR file. decode-\u003Echannels[i].width (int32_t) is multiplied by bytes_per_element in 32-bit signed arithmetic. With large widths (e.g., \u003E= 536870912 for FLOAT data), this overflows, producing a corrupted offset that is later used for pointer arithmetic and can cause a heap out-of-bounds write. The same unchecked multiplication pattern appears in two other HTJ2K paths (bytes-per-line accumulation and pixel-line pointer advancement). As with related CVE-2026-34378 through CVE-2026-34589 fixes in other codecs, validating only after the multiplication is too late because the value may already be overflowed. This issue has been fixed in version 3.4.12.",
  "published": "2026-06-18T21:16:28Z",
  "severity": "high",
  "cvss": 7.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
  "epss": 0.00211,
  "epssPercentile": 0.11485,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "openexr",
      "release": "Debian 14",
      "fixedVersion": "3.4.14-0.1",
      "fix": "DEBIAN-CVE-2026-44663",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-44663",
      "released": "2026-06-18T21:16:28Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}