CVE-2026-29043: 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…

PriorityP427medium5.5CVSS 3.1

AVLACLPRNUIRSUCNINAH

EPSS

0.21%

11.6th percentile

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
hdfgroup	hdf5	<= 1.14.1-2	—

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

vendor_redhat5.5MEDIUM

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