Open Asset Import Library Assimp 17c12da Node Parser MDLLoader.cpp AddBonesToNodeGraph_3DGS_MDL7 bones_num heap-based overflow

Summaryinfo

A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp 17c12da. This impacts the function Assimp::MDLImporter::AddBonesToNodeGraph_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component Node Parser. This manipulation of the argument bones_num causes heap-based overflow. This vulnerability is tracked as CVE-2026-19970. The attack is possible to be carried out remotely. Moreover, an exploit is present. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability was found in Open Asset Import Library Assimp 17c12da. It has been declared as critical. Affected by this vulnerability is 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 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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-19970. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. 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 was informed of the problem early through an issue report but has not responded yet.

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Software Library

Vendor

• Open Asset Import Library

Name

• Assimp

Version

• 17c12da

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #873131: Assimp commit 17c12da Heap-based Buffer Overflow (by TYGLS)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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