CVE-2021-46242

Name: CVE-2021-46242
Creator: NVD / NIST
Published: 2022-01-21T21:15:08.883+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.16%

Last modified Jun 17, 2026

CVE-2021-46242 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. HDF5 v1.13.1-1 was discovered to contain a heap-use-after free via the component H5AC_unpin_entry.. EPSS estimates a 1.16% chance of exploitation in the next 30 days.

Description

HDF5 v1.13.1-1 was discovered to contain a heap-use-after free via the component H5AC_unpin_entry.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.16%

63.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Hdfgroup	Hdf5	1.13.1-1

References

https://github.com/HDFGroup/hdf5/issues/1329Exploit, Issue Tracking, Third Party Advisory
https://github.com/HDFGroup/hdf5/issues/1329Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Jan 21, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46242?

HDF5 v1.13.1-1 was discovered to contain a heap-use-after free via the component H5AC_unpin_entry.

How severe is CVE-2021-46242?

CVE-2021-46242 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.16% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46242?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-46242?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST