Answer in brief
CVE-2026-19024 records a High severity (CVSS 8.2) vulnerability in HDF5 H5Pget_fill_value NULL Pointer Dereference via Malformed Fill Value Message. The current sources do not mark it as known exploited. The current feed maps The HDF Group/HDF5 (generic), The HDF Group/HDF5 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps The HDF Group/HDF5 (generic), The HDF Group/HDF5 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| The HDF Group/HDF5generic | <= 2.1.1 | Not reported |
| The HDF Group/HDF5generic | <= 2.3.0 | Not reported |
Published upstream
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
NULL pointer dereference in H5Pget_fill_value in HDF5 before 2.1.1 allows attackers to cause a denial of service via a dataset whose version 1 or 2 fill value message has the "defined" flag set together with a negative size field, which is not normalized to the library's "undefined" sentinel and reaches H5T_path_find with a NULL datatype.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-19024 records a High severity (CVSS 8.2) vulnerability in HDF5 H5Pget_fill_value NULL Pointer Dereference via Malformed Fill Value Message. The current sources do not mark it as known exploited. The current feed maps The HDF Group/HDF5 (generic), The HDF Group/HDF5 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps The HDF Group/HDF5 (generic), The HDF Group/HDF5 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| The HDF Group/HDF5generic | <= 2.1.1 | Not reported |
| The HDF Group/HDF5generic | <= 2.3.0 | Not reported |
Published upstream
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
NULL pointer dereference in H5Pget_fill_value in HDF5 before 2.1.1 allows attackers to cause a denial of service via a dataset whose version 1 or 2 fill value message has the "defined" flag set together with a negative size field, which is not normalized to the library's "undefined" sentinel and reaches H5T_path_find with a NULL datatype.
Quoted source text, attributed separately from HOL analysis.