Heap-based Buffer Overflow in HDF5 Affects Multiple Versions
CVE-2025-6270

4.8MEDIUM

Key Information:

Vendor

HDF Group

Status
Hdf5
Vendor
CVE Published:
19 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6270?

A heap-based buffer overflow vulnerability has been identified in versions of HDF5 up to 1.14.6, specifically within the function H5FS__sect_find_node of the file H5FSsection.c. Attackers can manipulate this weakness, potentially allowing for unauthorized access to system resources. The existence of publicly disclosed exploits could lead to local host attacks, making it crucial for users to apply mitigations or updates to safeguard their systems against potential exploitation.

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-2025-6270 - Proof of Concept

References

https://vuldb.com/?id.313274
vdb-entrytechnical-description
https://vuldb.com/?ctiid.313274
signaturepermissions-required
https://vuldb.com/?submit.592588
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-2025-6270 : Heap-based Buffer Overflow in HDF5 Affects Multiple Versions