CVE-2026-17574

NULL Pointer Dereference in HDF5 via Invalid Variable-Length Datatype Type Tag

Published: 7/27/2026 Last updated: 7/27/2026 Reserved: 7/27/2026

HDF5 contains a NULL pointer dereference vulnerability. Processing a crafted HDF5 file containing an attribute with an invalid variable-length datatype type field may cause the application to crash when the attribute is read.

CNA assigner: HDFG (0253b833-3e77-4dfe-9d57-17db1a2f0a74) Requested by: n/a

Metrics

Version	Score	Severity	Vector String
4.0	5.2	Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P

Opam packages affected (1)

hdf5

Products affected (0)

No product listed.

References (1)

https://github.com/HDFGroup/hdf5/commit/3fa6ed6e9dfeebbc784e21d8c48e31e35a8042bc