CVE-2026-19026
Nbit filter NULL/short parameter-array dereference
Description
H5Z__filter_nbit in H5Znbit.c in HDF5 through 2.3.0 dereferences cd_values[0] through cd_values[4] without validating that cd_values is non-NULL or that cd_nelmts is at least 5, the fixed size of the filter's header. This allows attackers to cause a denial of service via a crafted HDF5 file that stores the N-Bit filter pipeline message with zero client-data values, opened and read via H5Dread, e.g. by the h5ls or h5repack tools.
No summary for this CVE yet.
Weaknesses
Affected Products
The HDF Group
oss-projectaka hdf5, hdf group
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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MITRE ATT&CK
2 techniques Impact
Initial Access
References
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