Vulnerability Details CVE-2026-26200
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 12.2%
CVSS Severity
CVSS v3 Score 7.8
Products affected by CVE-2026-26200
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cpe:2.3:a:hdfgroup:hdf5:-
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cpe:2.3:a:hdfgroup:hdf5:1.10.0
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cpe:2.3:a:hdfgroup:hdf5:1.10.1
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cpe:2.3:a:hdfgroup:hdf5:1.10.2
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cpe:2.3:a:hdfgroup:hdf5:1.10.3
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cpe:2.3:a:hdfgroup:hdf5:1.10.4
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cpe:2.3:a:hdfgroup:hdf5:1.12.0
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cpe:2.3:a:hdfgroup:hdf5:1.12.1
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cpe:2.3:a:hdfgroup:hdf5:1.12.2
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cpe:2.3:a:hdfgroup:hdf5:1.12.2-3
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cpe:2.3:a:hdfgroup:hdf5:1.13.0
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cpe:2.3:a:hdfgroup:hdf5:1.13.1
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cpe:2.3:a:hdfgroup:hdf5:1.13.1-1
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cpe:2.3:a:hdfgroup:hdf5:1.13.2
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cpe:2.3:a:hdfgroup:hdf5:1.13.3
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cpe:2.3:a:hdfgroup:hdf5:1.14.0
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cpe:2.3:a:hdfgroup:hdf5:1.14.1
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cpe:2.3:a:hdfgroup:hdf5:1.14.1-2
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cpe:2.3:a:hdfgroup:hdf5:1.14.2
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cpe:2.3:a:hdfgroup:hdf5:1.14.3
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cpe:2.3:a:hdfgroup:hdf5:1.14.4
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cpe:2.3:a:hdfgroup:hdf5:1.14.4.1
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cpe:2.3:a:hdfgroup:hdf5:1.4.0
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cpe:2.3:a:hdfgroup:hdf5:1.4.1
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cpe:2.3:a:hdfgroup:hdf5:1.4.2
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cpe:2.3:a:hdfgroup:hdf5:1.4.3
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cpe:2.3:a:hdfgroup:hdf5:1.4.4
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cpe:2.3:a:hdfgroup:hdf5:1.4.5
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cpe:2.3:a:hdfgroup:hdf5:1.6.0
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cpe:2.3:a:hdfgroup:hdf5:1.6.1
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cpe:2.3:a:hdfgroup:hdf5:1.6.10
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cpe:2.3:a:hdfgroup:hdf5:1.6.2
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cpe:2.3:a:hdfgroup:hdf5:1.6.3
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cpe:2.3:a:hdfgroup:hdf5:1.6.4
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cpe:2.3:a:hdfgroup:hdf5:1.6.5
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cpe:2.3:a:hdfgroup:hdf5:1.6.6
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cpe:2.3:a:hdfgroup:hdf5:1.6.7
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cpe:2.3:a:hdfgroup:hdf5:1.6.8
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cpe:2.3:a:hdfgroup:hdf5:1.6.9
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cpe:2.3:a:hdfgroup:hdf5:1.8.0
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cpe:2.3:a:hdfgroup:hdf5:1.8.1
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cpe:2.3:a:hdfgroup:hdf5:1.8.10
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cpe:2.3:a:hdfgroup:hdf5:1.8.11
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cpe:2.3:a:hdfgroup:hdf5:1.8.12
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cpe:2.3:a:hdfgroup:hdf5:1.8.13
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cpe:2.3:a:hdfgroup:hdf5:1.8.14
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cpe:2.3:a:hdfgroup:hdf5:1.8.15
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cpe:2.3:a:hdfgroup:hdf5:1.8.16
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cpe:2.3:a:hdfgroup:hdf5:1.8.17
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cpe:2.3:a:hdfgroup:hdf5:1.8.18
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cpe:2.3:a:hdfgroup:hdf5:1.8.19
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cpe:2.3:a:hdfgroup:hdf5:1.8.2
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cpe:2.3:a:hdfgroup:hdf5:1.8.20
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cpe:2.3:a:hdfgroup:hdf5:1.8.3
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cpe:2.3:a:hdfgroup:hdf5:1.8.4
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cpe:2.3:a:hdfgroup:hdf5:1.8.5
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cpe:2.3:a:hdfgroup:hdf5:1.8.6
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cpe:2.3:a:hdfgroup:hdf5:1.8.7
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cpe:2.3:a:hdfgroup:hdf5:1.8.8
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cpe:2.3:a:hdfgroup:hdf5:1.8.9