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Vulnerabilities CVE-2026-26200

CVE-2026-26200

High
Open
TLP:CLEAR

HDF5 Affected by H5T__conv_struct_opt Heap Buffer Overflow

AI Analysis

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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.

Details

CVSS Score
7.8
EPSS Score
0.36%

28.4th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Confidence
90%
Published
Feb 19, 2026
Last Modified
Jul 15, 2026
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