HDF5 is software for managing data. In 1.14.1-2 and earlier, an attacker who can control an h5 file parsed by HDF5 can trigger a write-based heap buffer overflow condition in the H5T__ref_mem_setnull method. 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.
Advisories

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Fixes

Solution

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Workaround

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History

Fri, 10 Apr 2026 16:00:00 +0000

Type Values Removed Values Added
Description HDF5 is software for managing data. In 1.14.1-2 and earlier, an attacker who can control an h5 file parsed by HDF5 can trigger a write-based heap buffer overflow condition in the H5T__ref_mem_setnull method. 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.
Title HDF5 H5T__ref_mem_setnull Heap Buffer Overflow
Weaknesses CWE-122
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-10T15:35:51.682Z

Reserved: 2026-03-03T17:50:11.242Z

Link: CVE-2026-29043

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-10T16:16:30.693

Modified: 2026-04-10T16:16:30.693

Link: CVE-2026-29043

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses