CVE-2026-26199: Buffer underflow in `H5Iget_name `/`H5G_get_name` if size is zero
HDFGroup · hdf5
Affected: HDFGroup hdf5 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 29% of scored CVEs
DescriptionCVE.org
HDF5 is a high-performance library and a file format specification that implements the HDF5 data model. If `H5Iget_name` is invoked on a group id with `0` for the size parameter, it will underflow when trying to place a null terminator in the buffer. This can occur if `H5Iget_name` is invoked in a way where `size` can be forced to zero, and there is important data before the `name` buffer.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- HDFGroup · hdf5<= 1.14.6
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-26199 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.