Heap Buffer Overflow in HDF5 Software by The HDF Group

CVE-2026-29043

What is CVE-2026-29043?

The HDF5 software, used for managing data, has a vulnerability where an attacker can manipulate an improperly handled h5 file, leading to a heap buffer overflow in the H5T__ref_mem_setnull method. This condition can result in a denial-of-service scenario and may also pave the way for potential remote code execution, depending on the exploitability context of the buffer overflow vulnerabilities in modern operating systems.

References