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HDF5 CVE-2025-6856

| EUVD-2025-19481 LOW
Buffer Overflow (CWE-119)
2025-06-29 cna@vuldb.com
1.9
CVSS 4.0 · NVD

Severity by source

NVD PRIMARY
1.9 LOW
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Ubuntu
LOW
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

6
CVSS changed
Apr 29, 2026 - 01:11 NVD
3.3 (LOW) 1.9 (LOW)
Patch released
Mar 31, 2026 - 21:13 nvd
Patch available
EUVD ID Assigned
Mar 16, 2026 - 01:15 euvd
EUVD-2025-19481
Analysis Generated
Mar 16, 2026 - 01:15 vuln.today
PoC Detected
Jul 08, 2025 - 14:39 vuln.today
Public exploit code
CVE Published
Jun 29, 2025 - 10:15 nvd
LOW 3.3

DescriptionCVE.org

A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5FL__reg_gc_list of the file src/H5FL.c. The manipulation leads to use after free. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.

Analysis

A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5FL__reg_gc_list of the file src/H5FL.c. The manipulation leads to use after free. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.

Vendor StatusVendor

Ubuntu

Priority: Low
hdf5
Release Status Version
plucky ignored end of life, was needs-triage
bionic not-affected code not present
focal needed -
jammy needed -
noble needed -
trusty not-affected code not present
xenial not-affected code not present
upstream released 2.0.0
oracular ignored end of life, was needs-triage
questing needed -

Debian

hdf5
Release Status Fixed Version Urgency
bullseye vulnerable 1.10.6+repack-4+deb11u1 -
bookworm vulnerable 1.10.8+repack1-1 -
trixie vulnerable 1.14.5+repack-3 -
forky, sid vulnerable 1.14.6+repack-2 -
(unstable) fixed (unfixed) unimportant

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CVE-2025-6856 vulnerability details – vuln.today

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