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CVE 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.

Score
7.8 high
Published
2026-02-19
Links
NVD · cve.org

Affected ports (3)

PortPackageVersionStatusMaintainer
science/hdf5hdf51.12.2_2,1unaddressedsunpoet@FreeBSD.org
science/hdf5-110hdf5-1101.10.11unaddressedsunpoet@FreeBSD.org
science/hdf5-18hdf5-181.8.23unaddressedthierry@FreeBSD.org

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>hdf5</name>
	<range><lt>1.14.4.2</lt></range>
      </package>
      <package>
	<name>hdf5-110</name>
	<range><lt>1.14.4.2</lt></range>
      </package>
      <package>
	<name>hdf5-18</name>
	<range><lt>1.14.4.2</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>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.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-26200</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-26200</url>
    </references>
    <dates>
      <discovery>2026-02-19</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>