Heap-based Buffer Overflow in HDF5 Product
CVE-2025-2923

4.8MEDIUM

Key Information:

Vendor

HDF Group

Status
Hdf5
Vendor
CVE Published:
28 March 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-2923?

A significant heap-based buffer overflow vulnerability has been identified in HDF5, specifically in the function H5F_addr_encode_len located in src/H5Fint.c. This flaw arises from improper handling of the pp argument, leading to memory manipulation issues. The vulnerability necessitates local exploitation, and details have been publicly disclosed, requiring immediate attention from users of versions up to 1.14.6 to mitigate potential risks.

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-2025-2923 - Proof of Concept

References

https://vuldb.com/?id.301898
vdb-entrytechnical-description
https://vuldb.com/?ctiid.301898
signaturepermissions-required
https://vuldb.com/?submit.521151
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

.