Vulnerability Details CVE-2026-34734
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 2.1%
CVSS Severity
CVSS v3 Score 7.8