VULNERABILITY INTELLIGENCE
CVE-2026-19026
EPSS probability0.19%
CISA KEVNot currently listed
Published2026-08-05
Last modified2026-10-23
Description
H5Z__filter_nbit in H5Znbit.c in HDF5 prior to 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.
Weakness classification
- 0253b833-3e77-4dfe-9d57-17db1a2f0a74: CWE-476