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CVE-2026-19970— Open Asset Import Library Assimp Node MDLLoader.cpp AddBonesToNodeGraph_3DGS_MDL7 heap-based overflow

Quick assessment

Affected
Open Asset Import Library Assimp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Open Asset Import Library是Open Asset Import Library组织开源的一个库。用于导入和导出各种三维模型格式。 Open Asset Import Library 17c12da版本存在缓冲区错误漏洞，该漏洞源于Node Parser组件中Assimp::MDLImporter::AddBonesToNodeGraph_3DGS_MDL7函数对bones_num参数操作不当，导致堆缓冲区溢出，攻击者可远程利用该漏洞。

CVSS 6.3 · Medium EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Open Asset Import Library Assimp 17c12da affected
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I. Basic Information for CVE-2026-19970

Vulnerability Information
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Vulnerability Title
Open Asset Import Library Assimp Node MDLLoader.cpp AddBonesToNodeGraph_3DGS_MDL7 heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in Open Asset Import Library Assimp 17c12da. This affects the function Assimp::MDLImporter::AddBonesToNodeGraph_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component Node Parser. The manipulation of the argument bones_num results in heap-based buffer overflow. The attack can be executed remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Open Asset Import Library 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open Asset Import Library是Open Asset Import Library组织开源的一个库。用于导入和导出各种三维模型格式。 Open Asset Import Library 17c12da版本存在缓冲区错误漏洞，该漏洞源于Node Parser组件中Assimp::MDLImporter::AddBonesToNodeGraph_3DGS_MDL7函数对bones_num参数操作不当，导致堆缓冲区溢出，攻击者可远程利用该漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Open Asset Import Library Assimp 17c12da cpe:2.3:a:assimp:assimp:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-19970

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III. Intelligence Information for CVE-2026-19970

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Vendor Advisories for CVE-2026-19970 (1)

Proof of Concept for CVE-2026-19970 (1)

Other References for CVE-2026-19970 (2)

Other References for CVE-2026-19970 (1)

Same Patch Batch · Open Asset Import Library · 2026-08-17 · 4 CVEs total

CVE-2026-19967 6.3 MEDIUM Open Asset Import Library Assimp File Compression.cpp decompressBlock heap-based overflow
CVE-2026-19969 5.4 MEDIUM Open Asset Import Library Assimp 3DGS MDL7 Model Output Mesh Generator MDLLoader.cpp Gener
CVE-2026-19968 4.3 MEDIUM Open Asset Import Library Assimp 3DGS MDL7 Model LWOLoader.h ReadFaces_3DGS_MDL7 heap-base

IV. Related Vulnerabilities

Same product: Assimp
Same vendor: Open Asset Import Library
Same weakness: CWE-122

V. Comments for CVE-2026-19970

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