CVE-2026-29043
HDF5 H5T__ref_mem_setnull Heap Buffer Overflow
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
12th
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.
| CWE | CWE-122 |
| Vendor | hdfgroup |
| Product | hdf5 |
| Published | Apr 10, 2026 |
| Last Updated | Apr 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
HDFGroup / hdf5
<= 1.14.1-2