Vulnerability Description
HDF5 is software for managing data. Prior to version 1.14.4-2, an attacker who can control an `h5` file parsed by HDF5 can trigger a write-based heap buffer overflow condition. This can lead to a denial-of-service condition, and potentially further issues such as remote code execution depending on the practical exploitability of the heap overflow against modern operating systems. Real-world exploitability of this issue in terms of remote-code execution is currently unknown. Version 1.14.4-2 fixes the issue.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hdfgroup | Hdf5 | < 1.14.4.2 |
Related Weaknesses (CWE)
References
- https://github.com/HDFGroup/hdf5/security/advisories/GHSA-5p2m-j456-9mr2ExploitThird Party Advisory
FAQ
What is CVE-2026-26200?
CVE-2026-26200 is a vulnerability with a CVSS score of 7.8 (HIGH). HDF5 is software for managing data. Prior to version 1.14.4-2, an attacker who can control an `h5` file parsed by HDF5 can trigger a write-based heap buffer overflow condition. This can lead to a deni...
How severe is CVE-2026-26200?
CVE-2026-26200 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-26200?
Check the references section above for vendor advisories and patch information. Affected products include: Hdfgroup Hdf5.