VULNERABILITY INTELLIGENCE

CVE-2026-26200

CVSS score7.8 HIGH
EPSS probability0.42%
CISA KEVNot currently listed
Published2026-02-19
Last modified2026-07-15
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Weakness classification

  • security-advisories@github.com: CWE-122
  • nvd@nist.gov: CWE-787
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-131

Primary references