{"id":"CVE-2026-17572","summary":"HDF5 SOHM List Index Heap Buffer Overflow","details":"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.","modified":"2026-07-29T03:30:41.256032464Z","published":"2026-07-27T15:11:36.949Z","database_specific":{"cwe_ids":["CWE-125","CWE-787"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/17xxx/CVE-2026-17572.json","cna_assigner":"HDFG"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/17xxx/CVE-2026-17572.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-17572"},{"type":"REPORT","url":"https://github.com/HDFGroup/hdf5/issues/6501"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/hdfgroup/hdf5","events":[{"introduced":"577c192518598c7e2945683655feffcdbdf5a91b"},{"fixed":"4fde4fd787744b6a19b12032f4dad0383fbe6fbd"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"2.1.1"},{"introduced":"HDF5"},{"fixed":"2.1.1"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-17572.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:H/SC:N/SI:L/SA:H/E:U"}]}