Heap-based Buffer Overflow in HDF5 Product from HDF Group
CVE-2025-6269

4.8MEDIUM

Key Information:

Vendor

HDF Group

Status
Hdf5
Vendor
CVE Published:
19 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6269?

A vulnerability exists in the HDF5 product, specifically in the H5C__reconstruct_cache_entry function located in the H5Cimage.c file. This issue allows for a heap-based buffer overflow, necessitating local access for exploitation. The vulnerability has been publicly disclosed, and potential attacks could manipulate the memory allocation, leading to severe consequences. Users of HDF5 versions up to 1.14.6 should be aware of this risk and apply necessary updates or mitigations.

Affected Version(s)

HDF5 1.14.0

HDF5 1.14.1

HDF5 1.14.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-6269 - Proof of Concept

References

https://vuldb.com/?id.313273
vdb-entrytechnical-description
https://vuldb.com/?ctiid.313273
signaturepermissions-required
https://vuldb.com/?submit.592587
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Rulkallos (VulDB User)
.
CVE-2025-6269 : Heap-based Buffer Overflow in HDF5 Product from HDF Group