HDF5 is software for managing data. Prior to version 1.14.4-2, an attacker who can control an h5 file parsed by HDF5 can trigger a write-based heap buffer overflow condition. This can lead to a denial-of-service condition, and potentially further issues such as remote code execution depending on the practical exploitability of the heap overflow against modern operating systems. Real-world exploitability of this issue in terms of remote-code execution is currently unknown. Version 1.14.4-2 fixes the issue.
{
"sources": [
{
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-26200",
"database_specific": {
"status": "Analyzed"
},
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26200",
"modified": "2026-02-20T20:14:37.683Z",
"id": "CVE-2026-26200",
"imported": "2026-04-29T08:59:45.955Z",
"published": "2026-02-19T20:25:42.610Z"
},
{
"url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-7979",
"html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-7979",
"modified": "2026-02-19T21:23:04Z",
"id": "EUVD-2026-7979",
"imported": "2026-04-29T08:59:47.899Z",
"published": "2026-02-19T19:19:10Z"
}
],
"license": "CC-BY-4.0"
}