CVE-2025-6858

HDF5 H5Centry.c H5C__flush_single_entry null pointer dereference

MEDIUM
5.5
CVSS Score
Published: June 29, 2025 at 11:00 AM UTC
Updated: June 17, 2026 at 10:02 AM UTC
1 product affected across 1 vendorHDF5

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

A vulnerability was found in HDF5 1.14.6 and classified as problematic. Affected by this issue is the function H5C__flush_single_entry of the file src/H5Centry.c. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

Issue TrackingExploitThird Party Advisory
https://github.com/HDFGroup/hdf5/issues/5576
SignaturePermissions Required
https://vuldb.com/?ctiid.314330
VDB EntryTechnical DescriptionThird Party Advisory
https://vuldb.com/?id.314330
Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.602530

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-404CWE-476

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