CVE-2026-19026
Nbit filter NULL/short parameter-array dereference
- State
- Published
- Severity
- 6.8 Medium
- Published
- Aug 5, 2026
- Updated
- Oct 6, 2026
- Reserved
- Aug 5, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | HDFG |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
HDF5The HDF Group |
|
References
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