CVE-2021-45829

HDF5 1.13.1-1 is affected by: segmentation fault, which causes a Denial of Service.

5.5 Medium

HDF5 1.13.1-1 is affected by: segmentation fault, which causes a Denial of Service.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.69%Up 0.2 points since Jan 4, 2022

What each source reports

NVD Score used 5.5

HDF5 1.13.1-1 is affected by: segmentation fault, which causes a Denial of Service.

Record: CVE-2021-45829
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness: CWE-404
Updated: 2026-11-02

CVE List No score

HDF5 1.13.1-1 is affected by: segmentation fault, which causes a Denial of Service.

Record: CVE-2021-45829
Updated: 2026-11-02

EUVDEUVD-2021-32547 No score

HDF5 1.13.1-1 is affected by: segmentation fault, which causes a Denial of Service.

Record: EUVD-2021-32547
Updated: 2026-11-03

GitHub AdvisoriesGHSA-23gx-cm6v-952g No score

HDF5 1.13.1-1 is affected by: segmentation fault, which causes a Denial of Service.

HDF5 1.13.1-1 is affected by: segmentation fault, which causes a Denial of Service.

Record: GHSA-23gx-cm6v-952g
Weakness: CWE-404
Updated: 2026-11-02

OSV 5.5

HDF5 1.13.1-1 is affected by: segmentation fault, which causes a Denial of Service.

Record: CVE-2021-45829
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2021-45829 5.5

HDF5 1.13.1-1 is affected by: segmentation fault, which causes a Denial of Service.

Record: DEBIAN-CVE-2021-45829
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2021-45829 5.5

HDF5 1.13.1-1 is affected by: segmentation fault, which causes a Denial of Service.

Record: UBUNTU-CVE-2021-45829
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

hdfgroup hdf5

Affected packages

Affected packages
Package	Affected	Fixed
`hdf5` Debian:12	All versions, plus listed versions 1.10.10+repack-11.10.10+repack-21.10.10+repack-31.10.10+repack-3.11.10.10+repack-3.2 Show 45 moreShow less 1.10.10+repack-3.2+ports1.10.10+repack-3.31.10.10+repack-41.10.10+repack-51.10.8+repack1-11.12.0+repack-1~exp11.12.0+repack-1~exp21.12.2+repack-1~exp11.14.3+repack-1~exp11.14.3+repack1-1~exp21.14.3+repack1-1~exp31.14.4.3+repack-1~exp11.14.4.3+repack-1~exp21.14.4.3+repack-1~exp31.14.5+repack-11.14.5+repack-1~exp11.14.5+repack-1~exp21.14.5+repack-1~exp31.14.5+repack-1~exp41.14.5+repack-1~exp51.14.5+repack-1~exp61.14.5+repack-21.14.5+repack-31.14.5+repack-3.11.14.5+repack-3~exp11.14.5+repack-3~exp21.14.5+repack-3~exp31.14.5+repack-3~exp41.14.5+repack-41.14.5+repack-4~exp11.14.5+repack-4~exp21.14.5+repack-5~exp21.14.5+repack-5~exp31.14.6+repack-11.14.6+repack-1~exp11.14.6+repack-1~exp101.14.6+repack-1~exp111.14.6+repack-1~exp121.14.6+repack-1~exp131.14.6+repack-1~exp141.14.6+repack-1~exp151.14.6+repack-1~exp161.14.6+repack-1~exp171.14.6+repack-1~exp181.14.6+repack-1~exp19	None known
`hdf5` Debian:13	All versions, plus listed versions 1.14.5+repack-31.14.5+repack-3.11.14.5+repack-41.14.5+repack-4~exp11.14.5+repack-4~exp2 Show 41 moreShow less 1.14.5+repack-5~exp21.14.5+repack-5~exp31.14.6+repack-11.14.6+repack-1~exp11.14.6+repack-1~exp101.14.6+repack-1~exp111.14.6+repack-1~exp121.14.6+repack-1~exp131.14.6+repack-1~exp141.14.6+repack-1~exp151.14.6+repack-1~exp161.14.6+repack-1~exp171.14.6+repack-1~exp181.14.6+repack-1~exp191.14.6+repack-1~exp21.14.6+repack-1~exp201.14.6+repack-1~exp211.14.6+repack-1~exp31.14.6+repack-1~exp41.14.6+repack-1~exp51.14.6+repack-1~exp61.14.6+repack-1~exp71.14.6+repack-1~exp81.14.6+repack-1~exp91.14.6+repack-21.14.6+repack-3~exp12.1.0+repack-12.1.0+repack-1~exp102.1.0+repack-1~exp112.1.0+repack-1~exp32.1.0+repack-1~exp42.1.0+repack-1~exp52.1.0+repack-1~exp62.1.0+repack-1~exp72.1.0+repack-1~exp82.1.0+repack-1~exp92.2.0+repack-12.2.0+repack-22.2.0+repack-32.2.0+repack-42.2.0+repack-5	None known
`hdf5` Debian:14	All versions, plus listed versions 1.14.5+repack-31.14.5+repack-3.11.14.5+repack-41.14.5+repack-4~exp11.14.5+repack-4~exp2 Show 41 moreShow less 1.14.5+repack-5~exp21.14.5+repack-5~exp31.14.6+repack-11.14.6+repack-1~exp11.14.6+repack-1~exp101.14.6+repack-1~exp111.14.6+repack-1~exp121.14.6+repack-1~exp131.14.6+repack-1~exp141.14.6+repack-1~exp151.14.6+repack-1~exp161.14.6+repack-1~exp171.14.6+repack-1~exp181.14.6+repack-1~exp191.14.6+repack-1~exp21.14.6+repack-1~exp201.14.6+repack-1~exp211.14.6+repack-1~exp31.14.6+repack-1~exp41.14.6+repack-1~exp51.14.6+repack-1~exp61.14.6+repack-1~exp71.14.6+repack-1~exp81.14.6+repack-1~exp91.14.6+repack-21.14.6+repack-3~exp12.1.0+repack-12.1.0+repack-1~exp102.1.0+repack-1~exp112.1.0+repack-1~exp32.1.0+repack-1~exp42.1.0+repack-1~exp52.1.0+repack-1~exp62.1.0+repack-1~exp72.1.0+repack-1~exp82.1.0+repack-1~exp92.2.0+repack-12.2.0+repack-22.2.0+repack-32.2.0+repack-42.2.0+repack-5	None known
`hdf5` Ubuntu:Pro:14.04:LTS	All versions, plus listed versions 1.8.11-3ubuntu11.8.11-5ubuntu11.8.11-5ubuntu21.8.11-5ubuntu61.8.11-5ubuntu71.8.11-5ubuntu7.11.8.11-5ubuntu7.1+esm11.8.11-5ubuntu7.1+esm2	None known
`hdf5` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 1.8.15-patch1+docs-41.8.15-patch1+docs-51.8.16+docs-11.8.16+docs-21.8.16+docs-3 Show 6 moreShow less 1.8.16+docs-3ubuntu11.8.16+docs-41.8.16+docs-4ubuntu11.8.16+docs-4ubuntu1.11.8.16+docs-4ubuntu1.1+esm11.8.16+docs-4ubuntu1.1+esm2	None known
`paraview` Ubuntu:16.04:LTS	All versions, plus listed versions 4.1.0+dfsg+1-2build14.1.0+dfsg+1-35.0.0+dfsg1-2build15.0.0+dfsg1-2build25.0.1+dfsg1-35.0.1+dfsg1-4	None known
`hdf5` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 1.10.0-patch1+docs-41.10.0-patch1+docs-4ubuntu0.1~esm11.10.0-patch1+docs-4ubuntu0.1~esm2	None known
`paraview` Ubuntu:18.04:LTS	All versions, plus listed versions 5.1.2+dfsg1-25.1.2+dfsg1-2build15.4.1+dfsg3-1	None known
`hdf5` Ubuntu:Pro:20.04:LTS	All versions, plus listed versions 1.10.4+repack-101.10.4+repack-111.10.4+repack-11ubuntu11.10.4+repack-11ubuntu1+esm1	None known
`paraview` Ubuntu:20.04:LTS	All versions, plus listed versions 5.4.1+dfsg4-45.7.0-4ubuntu85.7.0-4ubuntu9	None known

Show 12 moreShow less

Affected packages
Package	Affected	Fixed
`hdf5` Ubuntu:22.04:LTS	All versions, plus listed versions 1.10.6+repack-51.10.7+repack-4ubuntu11.10.7+repack-4ubuntu2	None known
`insighttoolkit5` Ubuntu:22.04:LTS	All versions, plus listed versions 5.2.1-15.2.1-25.2.1-3	None known
`paraview` Ubuntu:22.04:LTS	All versions, plus listed versions 5.9.0-2ubuntu15.10.0~rc1-1build3	None known
`hdf5` Ubuntu:24.04:LTS	All versions, plus listed versions 1.10.8+repack1-1ubuntu11.10.10+repack-3ubuntu11.10.10+repack-3.1ubuntu31.10.10+repack-3.1ubuntu4	None known
`insighttoolkit5` Ubuntu:24.04:LTS	All versions, plus listed versions 5.3.0-65.3.0-6build15.3.0-6build25.3.0-75.3.0-7build15.3.0-7build35.3.0-7build4	None known
`paraview` Ubuntu:24.04:LTS	All versions, plus listed versions 5.11.0+dfsg-25.11.0+dfsg-2build15.11.2+dfsg-45.11.2+dfsg-65.11.2+dfsg-6build15.11.2+dfsg-6build45.11.2+dfsg-6build5	None known
`insighttoolkit5` Ubuntu:25.10	All versions, plus listed versions 5.4.0-25.4.3-45.4.3-5	None known
`paraview` Ubuntu:25.10	All versions, plus listed versions 5.13.2+dfsg-2ubuntu15.13.2+dfsg-2ubuntu25.13.2+dfsg-3	None known
`insighttoolkit5` Ubuntu:26.10	All versions, plus listed versions 5.4.5-1build25.4.6-15.4.7-1	None known
`paraview` Ubuntu:26.10	All versions, plus listed versions 6.0.1+dfsg1-76.0.1+dfsg1-86.1.1+dfsg1-2build1	None known
`insighttoolkit5` Ubuntu:26.04:LTS	All versions, plus listed versions 5.4.3-55.4.4-15.4.5-15.4.5-1build15.4.5-1build2	None known
`paraview` Ubuntu:26.04:LTS	All versions, plus listed versions 5.13.2+dfsg-35.13.2+dfsg-3ubuntu15.13.2+dfsg-3.16.0.1+dfsg1-6ubuntu16.0.1+dfsg1-7	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-45829 is a medium vulnerability (CVSS 5.5) in Hdfgroup Hdf5, published January 3, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.69%, the 53rd percentile. No source names a fixed version.

References

This page doesn't list everything

Left out here: 27 versions. The JSON record has them.