CVE-2026-120756

HDF5 through 2.2.0 contains a heap buffer over-read vulnerability in H5Ochunkdeserialize in src/H5Ocache.c. When decoding object header messages, the declared message size is checked against the end of the chunk image before the remainder of the message header flags, and for version 2 object...

CVE-2026-120756 Heap Buffer Over-read via Malformed Message Size in HDF5's H5O__chunk_deserialize

HDF5 through 2.2.0 contains a heap buffer over-read vulnerability in H5Ochunkdeserialize in src/H5Ocache.c. When decoding object header messages, the declared message size is checked against the end of the chunk image before the remainder of the message header flags, and for version 2 object...

EUVD-2026-116008

HDF5 through 2.2.0 contains a heap buffer over-read vulnerability in H5Ochunkdeserialize in src/H5Ocache.c. When decoding object header messages, the declared message size is checked against the end of the chunk image before the remainder of the message header flags, and for version 2 object...

CVE-2026-120756

HDF5 versions through 2.2.0 are affected by a heap buffer over-read vulnerability in the H5O__chunk_deserialize() function located in src/H5Ocache.c. The root cause is an incorrect size check during the decoding of object header messages; the check occurs before the final header fields (flags and...

CVE-2026-120756: The HDF Group HDF5: HDF5 through 2.2.0 contains a heap buffer over-read vulnerability in H5O__chunk_deserialize() in src/H5Ocache.c

HDF5 through 2.2.0 contains a heap buffer over-read vulnerability in H5Ochunkdeserialize in src/H5Ocache.c. When decoding object header messages, the declared message size is checked against the end of the chunk image before the remainder of the message header flags, and for version 2 object...