7.8
High
CVE-2026-34734 HDF5 is software for managing data
Description
HDF5 is software for managing data. In 1.14.1-2 and earlier, a heap-use-after-free was found in the h5dump helper utility. An attacker who can supply a malicious h5 file can trigger a heap use-after-free. The freed object is referenced in a memmove call from H5T__conv_struct. The original object was allocated by H5D__typeinfo_init_phase3 and freed by H5D__typeinfo_term.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| hdf5 1.14 | earliest → 1.14.1-2 | No fix stated |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | Versions not published |
Other CVEs of hdf5
The 32 CVEs of hdf5 →
CVE-2026-26199
HDF5 is a high-performance library and a file format specification that implements the HDF5 data model
5.9
Medium
CVE-2026-26197
HDF5 is a high-performance library and a file format specification that implements the HDF5 data model
5.9
Medium
CVE-2026-29043
HDF5 is software for managing data
5.5
Medium
CVE-2026-26200
HDF5 is software for managing data
7.8
High