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CVE-2026-29043

5.5 medium SSVC exploitation: poc Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.5 · hdfgroupNVD modified 2026-10-26 21:10

Affected (CPE criteria) 1

  • cpe:2.3:a:hdfgroup:hdf5:*:*:*:*:*:*:*:*

References 1