CVE-2026-106547
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.
Is your site exposed to CVE-2026-106547?
Run a free security scan — no signup, results in seconds.
Weakness Type (CWE)
References
Other References
Frequently Asked Questions
What is CVE-2026-106547? +
How do I check if I'm vulnerable to CVE-2026-106547? +
Related Vulnerabilities
vifm is vulnerable to a heap buffer overflow during the history merge process when saving the state file (vifminfo.json). This …
A heap buffer overflow vulnerability exists in the Jansi JNI "ioctl()" wrapper due to a lack of size verification for …
A type confusion vulnerability in Qt SVG allows an attacker to cause an application crash via a crafted SVG image. …
Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Variables and Tags.This issue affects Connext Professional: from …
Heap-based Buffer Overflow vulnerability in iniparser_dumpsection_ini() in iniparser allows attacker to read out of bound memory
There is a Heap-based Buffer Overflow vulnerability in QTextMarkdownImporter. This requires an incorrectly formatted markdown file to be passed to …