A vulnerability classified as critical was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function AI_MD5_PARSE_STRING_IN_QUOTATION of the file code/AssetLib/MD5/MD5Parser.cpp of the component MD5 File Handler. The manipulation of the argument data 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 available at github.com. This vulnerability was named CVE-2025-2757. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. 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.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Software Library

Vendor

• Open Asset Import Library

Name

• Assimp

Version

• 5.4.3

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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CVSSv3info

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Accepted

• Submit #517817: Open Asset Import Library Assimp >=5.4.3 Heap-based Buffer Overflow (by d3ng03)

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