CVE-2024-32615Network attack vector

Code execution via n-bit decompression overflow

Published May 9, 2024 · Updated Feb 13, 2025

Heap-based buffer overflow in The HDF Group HDF5 1.14.3 and earlier allows remote attackers to crash applications via crafted HDF5 data. The H5Z__nbit_decompress_one_compound path previously added file-controlled member sizes and offsets without rejecting wraparound or out-of-range values before the one-byte decompressor wrote output. Exploitation requires an application to process attacker-controlled n-bit-compressed compound data, causing a service crash or code execution.

CVSS severity9.8
Critical
EPSS probability1.10%
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 overflow in The HDF Group HDF5 1.14.3 and earlier allows remote attackers to crash applications via crafted HDF5 data. The H5Z__nbit_decompress_one_compound path previously added file-controlled member sizes and offsets without rejecting wraparound or out-of-range values before the one-byte decompressor wrote output. Exploitation requires an application to process attacker-controlled n-bit-compressed compound data, causing a service crash or code execution.

The record

CVE
CVE-2024-32615
Published
May 9, 2024
Updated
Feb 13, 2025
Vendor
The HDF Group
Product
HDF5
Classifications
CWE-787, T1203
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

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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