Heap-Based Buffer Overflow in HDF5 Product by HDFGroup
CVE-2025-6750

4.8MEDIUM

Key Information:

Vendor

HDFGroup

Status
Hdf5
Vendor
CVE Published:
27 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-6750?

A heap-based buffer overflow vulnerability exists in HDF5 version 1.14.6, specifically within the H5O__mtime_new_encode function located in src/H5Omtime.c. This flaw can be exploited through manipulation, requiring local access to the system. Once exploited, it can lead to significant security risks, including potential unauthorized access or system crashes. The vulnerability has been publicly disclosed and poses a serious threat to systems utilizing this version of HDF5.

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-2025-6750 - Proof of Concept

References

https://vuldb.com/?id.314048
vdb-entrytechnical-description
https://vuldb.com/?ctiid.314048
signaturepermissions-required
https://vuldb.com/?submit.601017
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-2025-6750 : Heap-Based Buffer Overflow in HDF5 Product by HDFGroup