CVE-2026-26199
published 2026-07-20CVE-2026-26199: HDF5 is a high-performance library and a file format specification that implements the HDF5 data model. If `H5Iget_name` is invoked on a group id with `0` for…
PriorityP336medium6.5CVSS 3.1
AVNACLPRNUINSUCNILAL
EPSS
0.35%
27.6th percentile
HDF5 is a high-performance library and a file format specification that implements the HDF5 data model. If `H5Iget_name` is invoked on a group id with `0` for the size parameter, it will underflow when trying to place a null terminator in the buffer. This can occur if `H5Iget_name` is invoked in a way where `size` can be forced to zero, and there is important data before the `name` buffer.
Affected
55 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| hdfgroup | hdf5 | < 2.1.0 | 2.1.0 |
| hdfgroup | hdf5 | <= 1.14.6 | — |
| hdfgroup | hdf5 | — | — |
| rhai | base-image-cpu-rhel9 | — | — |
| rhai | base-image-cuda-12.9-rhel9 | — | — |
| rhai | base-image-cuda-13.0-rhel9 | — | — |
| rhai | base-image-gaudi-rhel9 | — | — |
| rhai | base-image-neuron-rhel9 | — | — |
| rhai | base-image-rocm-6.4-rhel9 | — | — |
| rhai | base-image-rocm-7.0-rhel9 | — | — |
| rhai | base-image-rocm-7.1-rhel9 | — | — |
| rhai | base-image-spyre-rhel9 | — | — |
| rhai | base-image-tpu-rhel9 | — | — |
| rhaii | model-opt-cuda-rhel9 | — | — |
| rhaii | vllm-cpu-rhel9 | — | — |
| rhaii | vllm-cuda-rhel9 | — | — |
| rhaii | vllm-gaudi-rhel9 | — | — |
| rhaii | vllm-neuron-rhel9 | — | — |
| rhaii | vllm-rocm-rhel9 | — | — |
| rhaii | vllm-spyre-rhel9 | — | — |
| rhaii | vllm-tpu-rhel9 | — | — |
| rhaiis | model-opt-cuda-rhel9 | — | — |
| rhaiis | vllm-cpu-rhel9 | — | — |
| rhaiis | vllm-cuda-rhel9 | — | — |
| rhaiis | vllm-neuron-rhel9 | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
nvdv4.05.9MEDIUMCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_redhat5.9MEDIUM
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No public exploits indexed.
Bugzilla
CVE-2026-26199 hdf5: HDF5: Denial of Service via buffer underflow in H5Iget_name [fedora-all]
bugzilla·2026-07-20·CVSS 5.9
CVE-2026-26199 [MEDIUM] CVE-2026-26199 hdf5: HDF5: Denial of Service via buffer underflow in H5Iget_name [fedora-all]
CVE-2026-26199 hdf5: HDF5: Denial of Service via buffer underflow in H5Iget_name [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
HDF5 is a high-performance library and a file format specification that implements the HDF5 data model. If `H5Iget_name` is invoked on a group id with `0` for the size parameter, it will underflow when trying to place a null terminator in the buffer. This can occur if `H5Iget_name` is invoked in a way where `size` can be forced to zero, and there is important data before the `name` buffer.
Bugzilla
CVE-2026-26199 hdf5: HDF5: Denial of Service via buffer underflow in H5Iget_name [epel-all]
bugzilla·2026-07-20·CVSS 5.9
CVE-2026-26199 [MEDIUM] CVE-2026-26199 hdf5: HDF5: Denial of Service via buffer underflow in H5Iget_name [epel-all]
CVE-2026-26199 hdf5: HDF5: Denial of Service via buffer underflow in H5Iget_name [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
HDF5 is a high-performance library and a file format specification that implements the HDF5 data model. If `H5Iget_name` is invoked on a group id with `0` for the size parameter, it will underflow when trying to place a null terminator in the buffer. This can occur if `H5Iget_name` is invoked in a way where `size` can be forced to zero, and there is important data before the `name` buffer.
Bugzilla
CVE-2026-26199 HDF5: HDF5: Denial of Service via buffer underflow in H5Iget_name
bugzilla·2026-07-20·CVSS 5.9
CVE-2026-26199 [MEDIUM] CVE-2026-26199 HDF5: HDF5: Denial of Service via buffer underflow in H5Iget_name
CVE-2026-26199 HDF5: HDF5: Denial of Service via buffer underflow in H5Iget_name
HDF5 is a high-performance library and a file format specification that implements the HDF5 data model. If `H5Iget_name` is invoked on a group id with `0` for the size parameter, it will underflow when trying to place a null terminator in the buffer. This can occur if `H5Iget_name` is invoked in a way where `size` can be forced to zero, and there is important data before the `name` buffer.
2026-07-20
Published