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NVD / CVE Program· CNA mitre

CVE-2025-44904: hdf5 v1.14.6 was discovered to contain a heap buffer overflow via the H5VM_memcpyvv function.

Noroxi assessment

Priority: Monitor (action score 35/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.45% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: azl3 hdf5 1.14.6-2 on Azure Linux 3.0 1.14.6-3.

Low priority for now. Upgrade to azl3 hdf5 1.14.6-2 on Azure Linux 3.0 1.14.6-3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
May 30, 2025
Updated
Jun 17, 2026
EPSS
0.4% · 39th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-44904

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
hdfgrouphdf5

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • hdfgroup hdf51.14.6

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12hdf5from 0—

Same product

hdfgroup: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-13876An issue was discovered in the HDF HDF5 1.8.20 library.
    40Plan
  • CVE-2018-13874An issue was discovered in the HDF HDF5 1.8.20 library.
    40Plan
  • CVE-2018-13873An issue was discovered in the HDF HDF5 1.8.20 library.
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-2925Mar 28, 2025 · HDF5 H5MM.c H5MM_realloc double free
    7Monitor
  • ← EarlierCVE-2025-2926Mar 28, 2025 · HDF5 H5Ocache.c H5O__cache_chk_serialize null pointer dereference
    7Monitor
  • Later →CVE-2025-44905May 30, 2025 · hdf5 v1.14.6 was discovered to contain a heap buffer overflow via the H5Z__filter_scaleoffset function.
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
azl3 hdf5 1.14.6-2 on Azure Linux 3.01.14.6-3 · CBL-Mariner ReleasesMicrosoft (MSRC)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-29157381 days apartHDF5 through 1.14.3 contains a heap buffer overflow in H5HG_read, resulting in the corruption of the instruction pointer and causing denial
    39Monitor
  • CVE-2024-32621381 days apartHDF5 Library through 1.14.3 contains a heap-based buffer overflow in H5HG_read in H5HG.c (called from H5VL__native_blob_get in H5VLnative_bl
    39Monitor
  • CVE-2025-449050 days aparthdf5 v1.14.6 was discovered to contain a heap buffer overflow via the H5Z__filter_scaleoffset function.
    35Monitor
  • CVE-2024-32617381 days apartHDF5 Library through 1.14.3 contains a heap-based buffer over-read caused by the unsafe use of strdup in H5MM_xstrdup in H5MM.c (called from
    35Monitor
  • CVE-2024-32623381 days apartHDF5 Library through 1.14.3 contains a heap-based buffer overflow in H5VM_array_fill in H5VM.c (called from H5S_select_elements in H5Spoint.
    35Monitor
  • CVE-2024-33873381 days apartHDF5 Library through 1.14.3 has a heap-based buffer overflow in H5D__scatter_mem in H5Dscatgath.c.
    35Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-122 · Heap-based Buffer Overflow

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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