Heap-Based Buffer Overflow in HDF5 Affected by H5FSsection.c Function
CVE-2025-7069

4.8MEDIUM

Key Information:

Vendor

HDFGroup

Status
Hdf5
Vendor
CVE Published:
4 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7069?

A flaw exists in HDF5 version 1.14.6 stemming from the H5FS__sect_link_size function within the src/H5FSsection.c file. The vulnerability can be exploited to perform a heap-based buffer overflow, potentially allowing unauthorized access or control over the affected system. This issue can be triggered locally, making it critical for users to apply relevant patches or mitigations promptly. The exploit has been publicly disclosed, highlighting the urgent need for awareness and preventive measures.

Affected Version(s)

HDF5 1.14.6

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-2025-7069 - Proof of Concept

References

https://vuldb.com/?id.314904
vdb-entrytechnical-description
https://vuldb.com/?ctiid.314904
signaturepermissions-required
https://vuldb.com/?submit.602538
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
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

JJLeo (VulDB User)
.
CVE-2025-7069 : Heap-Based Buffer Overflow in HDF5 Affected by H5FSsection.c Function