A heap-based buffer over-read in H5O_attr_decode() in H5Oattr.c in the HDF HDF5 through…
Priority LOW 31CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.
Summary
A heap-based buffer over-read in H5O_attr_decode() in H5Oattr.c in the HDF HDF5 through 1.10.3 library allows attackers to cause a denial of service via a crafted HDF5 file. This issue was triggered while converting an HDF file to GIF file.
Why it matters now
EPSS 0.01312 70th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hdfgroup:hdf5:*:*:*:*:*:*:*:* | up to 1.10.3 | Vulnerable | The HDF Group |
- cpe:2.3:a:hdfgroup:hdf5:*:*:*:*:*:*:*:* Versions up to 1.10.3 Vulnerable ·The HDF Group
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenStack Platform 10 (Newton) | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 12 (Pike) | Affected | No fix yet |
| Red Hat OpenStack Platform 13 (Queens) | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 14 (Rocky) | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 8 (Liberty) | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 9 (Mitaka) | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2018-17435
- 2026-10-03 Alias added: GHSA-9fm6-2823-q5f3
References
More The HDF Group Hdf5 vulnerabilities
- TI-2025-28698 hdf5 v1.14.6 was discovered to contain a heap buffer overflow via the H5Z__filter_scaleoffset function. CVSS 3.1HIGH 8.8
- TI-2025-28697 hdf5 v1.14.6 was discovered to contain a heap buffer overflow via the H5VM_memcpyvv function. CVSS 3.1HIGH 8.8
- TI-2020-13412 Buffer Overflow vulnerability in function H5S_close in H5S.c in HDF5 1.10.4 allows remote… CVSS 3.1HIGH 8.8
- TI-2021-15413 Buffer Overflow vulnerability in HDFGroup hdf5-h5dump 1.12.0 through 1.13.0 allows… CVSS 3.1HIGH 7.5
- TI-2026-26978 HDF5: H5T__conv_struct Use After Free CVSS 3.1HIGH 7.8
- TI-2022-09532 Heap-based buffer overflow in HDF Group libhdf5 CVSS 3.1HIGH 7.8
Sources
- CVE-2018-17435 · CVE Program
- CVE-2018-17435 · NVD
- FIRST EPSS
- GHSA-9fm6-2823-q5f3 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-17435 · Red Hat security data · CC BY 4.0
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