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CVE-2025-5165— Open Asset Import Library Assimp MDCLoader.cpp ValidateSurfaceHeader out-of-bounds

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.

Assimp是Assimp开源的一个库。用于导入和导出各种三维模型格式。 Assimp 5.4.3版本存在缓冲区错误漏洞，该漏洞源于参数pcSurface2操作导致越界读取。

CVSS 3.3 · Low EPSS 0.23% · P14

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-5165

Vulnerability Information
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Vulnerability Title
Open Asset Import Library Assimp MDCLoader.cpp ValidateSurfaceHeader out-of-bounds
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in Open Asset Import Library Assimp 5.4.3 and classified as problematic. This issue affects the function MDCImporter::ValidateSurfaceHeader of the file assimp/code/AssetLib/MDC/MDCLoader.cpp. The manipulation of the argument pcSurface2 leads to out-of-bounds read. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Assimp 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Assimp是Assimp开源的一个库。用于导入和导出各种三维模型格式。 Assimp 5.4.3版本存在缓冲区错误漏洞，该漏洞源于参数pcSurface2操作导致越界读取。
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 5.4.3 -

II. Public POCs for CVE-2025-5165

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III. Intelligence Information for CVE-2025-5165

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Other References for CVE-2025-5165 (1)

Same Patch Batch · Open Asset Import Library · 2025-05-26 · 10 CVEs total

CVE-2025-5166 3.3 LOW Open Asset Import Library Assimp MDC File Parser MDCLoader.cpp InternReadFile out-of-bound
CVE-2025-5167 3.3 LOW Open Asset Import Library Assimp LWOLoader.h GetS0 out-of-bounds
CVE-2025-5168 3.3 LOW Open Asset Import Library Assimp MDLLoader.cpp ImportUVCoordinate_3DGS_MDL345 out-of-bound
CVE-2025-5169 3.3 LOW Open Asset Import Library Assimp MDLLoader.cpp InternReadFile_3DGS_MDL345 out-of-bounds
CVE-2025-5200 3.3 LOW Open Asset Import Library Assimp MDLLoader.cpp InternReadFile_Quake1 out-of-bounds
CVE-2025-5201 3.3 LOW Open Asset Import Library Assimp LWOLoader.cpp CountVertsAndFacesLWO2 out-of-bounds
CVE-2025-5202 3.3 LOW Open Asset Import Library Assimp HL1MDLLoader.cpp validate_header out-of-bounds
CVE-2025-5203 3.3 LOW Open Asset Import Library Assimp ParsingUtils.h SkipSpaces out-of-bounds
CVE-2025-5204 3.3 LOW Open Asset Import Library Assimp MDLMaterialLoader.cpp ParseSkinLump_3DGS_MDL7 out-of-boun

IV. Related Vulnerabilities

Same product: Assimp
Same vendor: Open Asset Import Library
Same weakness: CWE-125

V. Comments for CVE-2025-5165

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