CVE-2026-106547
A heap-based buffer overflow in H5VM_array_fill() in src/H5VM.c in HDF5 before 2.2.0 lets a remote…
- Risk score
- 52/100
- CVSS
- 8.5 v4.0
- Exploit chance (30 days)
- 0.2%
- Published
- 6 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- A heap-based buffer overflow in H5VM_array_fill() in src/H5VM.c in HDF5 before 2.2.0 lets a remote attacker cause an application crash and possibly execute arbitrary code with a crafted HDF5 file. When a dataset's unallocated chunks are read, H5D__fill_init() fills the fill-value buffer from datatype and dataspace met…
- Affected
- See advisory
- Fix
- Upgrade the product to 2.2.0 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 8.5 high
References
Original description
A heap-based buffer overflow in H5VM_array_fill() in src/H5VM.c in HDF5 before 2.2.0 lets a remote attacker cause an application crash and possibly execute arbitrary code with a crafted HDF5 file. When a dataset's unallocated chunks are read, H5D__fill_init() fills the fill-value buffer from datatype and dataspace metadata in the file. If that metadata is inconsistent with the buffer's allocated size, the write goes past the end of the buffer. The attacker can control the content written through the fill value stored in the file.
Last activity 6 Oct 2026. Patch Forecast updates every hour.