What’s Vulnerable › Vulnerabilities
CVE-2026-29043: HDF5 H5T__ref_mem_setnull Heap Buffer Overflow
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-04-10 · updated 2026-10-26
- Weakness: CWE-122
Description
HDF5 is software for managing data. In 1.14.1-2 and earlier, an attacker who can control an h5 file parsed by HDF5 can trigger a write-based heap buffer overflow condition in the H5T__ref_mem_setnull method. 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.
Affected products
- HDF5: through 1.14.1-2
References
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