CVE-2024-32617Network attack vector

Application crash via unsafe link-name duplication

Published May 9, 2024 · Updated Feb 13, 2025

Heap-based buffer over-read in The HDF Group HDF5 1.14.3 and earlier allows attackers to crash applications via crafted HDF5 files. H5G__ent_to_link passes a nonterminated link name from file metadata to H5MM_xstrdup, whose strdup call reads beyond the heap buffer. Opening attacker-controlled HDF5 files is required; the upstream project also reports potential code execution.

CVSS severity8.8
High
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer over-read in The HDF Group HDF5 1.14.3 and earlier allows attackers to crash applications via crafted HDF5 files. H5G__ent_to_link passes a nonterminated link name from file metadata to H5MM_xstrdup, whose strdup call reads beyond the heap buffer. Opening attacker-controlled HDF5 files is required; the upstream project also reports potential code execution.

The record

CVE
CVE-2024-32617
Published
May 9, 2024
Updated
Feb 13, 2025
Vendor
The HDF Group
Product
HDF5
Classifications
CWE-122, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=0 <=1.14.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The HDF Group · HDF5version=0 <=1.14.3

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

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No observations available

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

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

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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