HDF5 1.14.6 /src/H5Ochunk.c H5O__chunk_protect heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.1$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in HDF5 1.14.6. This affects the function H5O__chunk_protect of the file /src/H5Ochunk.c. The manipulation results in heap-based overflow. This vulnerability is identified as CVE-2025-6818. The attack is only possible with local access. Additionally, an exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5O__chunk_protect of the file /src/H5Ochunk.c. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on availability.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-6818. The exploitability is told to be easy. The attack needs to be approached locally. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-19452). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.1

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.3
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/27/2025 Advisory disclosed
06/27/2025 +0 days VulDB entry created
06/30/2025 +3 days VulDB entry last update

Sourcesinfo

Advisory: 5573
Status: Not defined

CVE: CVE-2025-6818 (🔒)
GCVE (CVE): GCVE-0-2025-6818
GCVE (VulDB): GCVE-100-314256
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/27/2025 18:57
Updated: 06/30/2025 18:21
Changes: 06/27/2025 18:57 (56), 06/28/2025 19:08 (30), 06/28/2025 19:41 (1), 06/30/2025 18:21 (1)
Complete: 🔍
Submitter: JJLeo
Cache ID: 216:7C9:103

Submitinfo

Accepted

  • Submit #602326: HDFGroup HDF5 hdf5 1.14.6 (commit 17c16b6) Heap-based Buffer Overflow (by JJLeo)

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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