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CVE-2026-34734

PoC —
CVSS 3.1
7.8 high
EPSS
<1%p9
Published
()
Modified
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.

Vendors
hdfgroup
Products
hdf5
Weakness
CWE-416, CWE-825
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD CVE.org GitHub PoCs EPSS (0.2%)

In the news

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