Heap-based buffer overflow in the SOHM list-index deserialization code in HDF5 through 2.1.1 on all platforms allows attackers to cause a denial of service (crash) via a crafted HDF5 file whose shared-message list index declares a num_messages count exceeding list_max, triggering out-of-bounds heap reads and writes in H5SM__cache_list_deserialize and H5SM__cache_list_verify_chksum.
{
"license": "CC-BY-4.0",
"sources": [
{
"id": "CVE-2026-17572",
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-17572",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-17572",
"published": "2026-07-27T16:17:04.660Z",
"modified": "2026-08-18T18:56:24.697Z",
"affected": {
"hdfgroup:hdf5": [
"< 2.2.0"
]
},
"imported": "2026-08-24T14:03:03.177Z",
"database_specific": {
"status": "Analyzed"
}
}
]
}