CVE-2025-2926Public exploit

Process crash via unchecked chunk-image pointer

Published Mar 28, 2025 · Updated Jul 24, 2025

NULL pointer dereference in HDF5 1.14.0 through 1.14.6 allows local users to crash a consuming process with a crafted HDF5 file. H5O__cache_chk_serialize passes an unchecked object-header chunk image pointer to H5MM_memcpy after serializing the chunk. The file must be opened locally with write access; the demonstrated consequence is a segmentation fault and process abort.

CVSS severityUnavailable
Unscored
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

NULL pointer dereference in HDF5 1.14.0 through 1.14.6 allows local users to crash a consuming process with a crafted HDF5 file. H5O__cache_chk_serialize passes an unchecked object-header chunk image pointer to H5MM_memcpy after serializing the chunk. The file must be opened locally with write access; the demonstrated consequence is a segmentation fault and process abort.

The record

CVE
CVE-2025-2926
Published
Mar 28, 2025
Updated
Jul 24, 2025
Vendor
The HDF Group
Product
HDF5
Classifications
CWE-404, CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.14.0
  2. Affected versionversion=1.14.1
  3. Affected versionversion=1.14.2
  4. Affected versionversion=1.14.3
  5. Affected versionversion=1.14.4
  6. Affected versionversion=1.14.5
  7. Affected versionversion=1.14.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The HDF Group · HDF5version=1.14.0; version=1.14.1; version=1.14.2; version=1.14.3; version=1.14.4; version=1.14.5; version=1.14.6

Published CVSS scores

1.9VulDBCVSS: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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Denial of Service
CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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