CVE-2024-32620

Code execution via address-decoding heap buffer over-read

Published May 9, 2024 · Updated Feb 13, 2025

Heap buffer over-read in The HDF Group HDF5 1.14.3 and earlier allows local users to corrupt the instruction pointer during address decoding. H5F_addr_decode_len in H5Fint.c reads beyond a heap buffer while decoding a file address; public upstream material does not disclose the missing validation. Triggering requires a local HDF5 parsing path, and instruction-pointer corruption can crash the process or permit code execution.

CVSS severity7.4
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer over-read in The HDF Group HDF5 1.14.3 and earlier allows local users to corrupt the instruction pointer during address decoding. H5F_addr_decode_len in H5Fint.c reads beyond a heap buffer while decoding a file address; public upstream material does not disclose the missing validation. Triggering requires a local HDF5 parsing path, and instruction-pointer corruption can crash the process or permit code execution.

The record

CVE
CVE-2024-32620
Published
May 9, 2024
Updated
Feb 13, 2025
Vendor
The HDF Group
Product
HDF5
Classifications
CWE-122, T1203
Attack vector
local
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 vectorlocal
Required privilegesunauthenticated

What is affected?

The HDF Group · HDF5version=0 <=1.14.3

Published CVSS scores

7.4CISA-ADPCVSS:3.1/AV:L/AC:H/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
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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