CVE-2025-2153Public exploitNetwork attack vector

Application crash via forged message sharing flag

Published Mar 10, 2025 · Updated May 12, 2025

Heap-based buffer overflow in HDF5 1.14.6 allows remote attackers to crash applications that process a crafted HDF5 file. H5O__chunk_deserialize accepts a forged sharing flag for an unshareable object message, causing H5SM_delete to read four bytes past a heap allocation. Exploitation requires an application to open the malicious file; the demonstrated outcome is an out-of-bounds read and process crash, not code execution.

CVSS severity8.1
High
EPSS probability0.49%
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 HDF5 1.14.6 allows remote attackers to crash applications that process a crafted HDF5 file. H5O__chunk_deserialize accepts a forged sharing flag for an unshareable object message, causing H5SM_delete to read four bytes past a heap allocation. Exploitation requires an application to open the malicious file; the demonstrated outcome is an out-of-bounds read and process crash, not code execution.

The record

CVE
CVE-2025-2153
Published
Mar 10, 2025
Updated
May 12, 2025
Vendor
The HDF Group
Product
HDF5
Classifications
CWE-119, CWE-122, CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 10, 2025CVE publishedPublication date reported by the CVE source.
  2. May 12, 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=1.14.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The HDF Group · HDF5version=1.14.6

Published CVSS scores

2.3VulDBCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
5.1VulDBAV:N/AC:H/Au:N/C:P/I:P/A:P
5.0VulDBCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
5.0VulDBCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

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 exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-122Heap-based Buffer Overflow
CWE-787Out-of-bounds Write
T1204.002Malicious File

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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