Open Asset Import Library Assimp up to 5.4.3 HL1MDLLoader.cpp read_meshes 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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4.8$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Open Asset Import Library Assimp up to 5.4.3. This affects the function read_meshes in the library assimp/code/AssetLib/MDL/HalfLife/HL1MDLLoader.cpp. This manipulation causes heap-based overflow. The identification of this vulnerability is CVE-2025-6120. The attack can only be executed locally. Furthermore, there is an exploit available. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.

Detailsinfo

A vulnerability classified as critical was found in Open Asset Import Library Assimp up to 5.4.3. Affected by this vulnerability is the function read_meshes in the library assimp/code/AssetLib/MDL/HalfLife/HL1MDLLoader.cpp. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is 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(). As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-6120. The exploitation appears to be easy. An attack has to be approached locally. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.

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-2025-18386). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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

06/15/2025 🔍
06/15/2025 +0 days 🔍
06/16/2025 +1 days 🔍

Sourcesinfo

Advisory: 6220
Status: Not defined
Confirmation: 🔍

CVE: CVE-2025-6120 (🔍)
GCVE (CVE): GCVE-0-2025-6120
GCVE (VulDB): GCVE-100-312589
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/15/2025 12:23
Updated: 06/16/2025 15:17
Changes: 06/15/2025 12:23 (59), 06/16/2025 15:17 (1)
Complete: 🔍
Submitter: Rulkallos
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #591235: Open Asset Import Library Assimp 5.4.3 Heap-based Buffer Overflow (by Rulkallos)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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