CVE-2026-29043
HDF5 H5T__ref_mem_setnull Heap Buffer Overflow
- State
- Published
- Severity
- 5.5 Medium
- Published
- Apr 10, 2026
- Updated
- Apr 14, 2026
- Reserved
- Mar 3, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.5 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | GitHub_M |
Weaknesses
- CWE-122 Heap-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
hdf5HDFGroup |
|
References
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