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Medium

A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been classified as problematic. Affected is the function MDCImporter::InternReadFile of the file assimp/code/AssetLib/MDC/MD

  • Disclosed: 26.05.2025
  • Updated: 11.10.2026 12:19

A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been classified as problematic. Affected is the function MDCImporter::InternReadFile of the file assimp/code/AssetLib/MDC/MDCLoader.cpp of the component MDC File Parser. The manipulation of the argument pcVerts leads to out-of-bounds read. It is possible to launch the attack on the local host. 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.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) pyassimp <= 5.4.3 no fix

References

CVSS score 5.5/10
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
-
Platform
Python (PyPI)
Package
pyassimp
Disclosed
26.05.2025
Updated
11.10.2026 12:19

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2025-173 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: pyassimp

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (33) in the archive
Total entries
33
First → latest
09.2024 10.2025
Without a fix
33
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • High 16
  • Medium 14
  • Low 2

Disclosures per year

Severity:
  1. A weakness has been identified in Open Asset Import Library Assimp 6.0.2. This affects the function Q3DImporter::InternReadFile of the file assimp/code/AssetLib/Q3D/Q3DLoader.cpp. Executing a manipula
    High · 7.8 CVE-2025-11277 <= 6.0.2 no fix
  2. A vulnerability was identified in Open Asset Import Library Assimp 6.0.2. Affected by this vulnerability is the function ODDLParser::getNextSeparator in the library assimp/contrib/openddlparser/includ
    High · 7.8 CVE-2025-11275 <= 6.0.2 no fix
  3. A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been classified as problematic. Affected is the function MDCImporter::InternReadFile of the file assimp/code/AssetLib/MDC/MD this entry
    Medium · 5.5 CVE-2025-5166 <= 5.4.3 no fix
  4. A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::ASE::Parser::ParseLV4MeshBonesVertices of the file code/AssetL
    High · 7.8 CVE-2025-3159 <= 5.4.3 no fix
  5. A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp 5.4.3. Affected by this issue is the function Assimp::LWO::AnimResolver::UpdateAnimRangeSetup of t
    High · 7.8 CVE-2025-3158 <= 5.4.3 no fix
  6. A vulnerability classified as critical has been found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::ASEImporter::BuildUniqueRepresentation of the file code/AssetLib/ASE/
    High · 8.8 CVE-2025-3015 <= 5.4.3 no fix
  7. A vulnerability classified as critical has been found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::AC3DImporter::ConvertObjectSection of the file code/AssetLib/AC/ACLoa
    High · 8.8 CVE-2025-2756 <= 5.4.3 no fix
  8. 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/MD5Pa
    High · 8.8 CVE-2025-2757 <= 5.4.3 no fix
  9. A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been classified as critical. Affected is the function SceneCombiner::MergeScenes of the file code/AssetLib/LWS/LWSLoader.cpp
    High · 8.8 CVE-2025-2753 <= 5.4.3 no fix
  10. A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been rated as critical. Affected by this issue is the function Assimp::AC3DImporter::ConvertObjectSection of the file code/A
    High · 8.8 CVE-2025-2755 <= 5.4.3 no fix
  11. A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been declared as critical. Affected by this vulnerability is the function Assimp::AC3DImporter::ConvertObjectSection of the
    High · 8.8 CVE-2025-2754 <= 5.4.3 no fix
  12. A vulnerability was found in Open Asset Import Library Assimp 5.4.3 and classified as problematic. This issue affects the function fast_atoreal_move in the library include/assimp/fast_atof.h of the co
    High · 8.8 CVE-2025-2752 <= 5.4.3 no fix
  13. A vulnerability has been found in Open Asset Import Library Assimp 5.4.3 and classified as problematic. This vulnerability affects the function Assimp::CSMImporter::InternReadFile of the file code/Ass
    High · 8.8 CVE-2025-2751 <= 5.4.3 no fix
  14. A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSML
    High · 8.8 CVE-2025-2750 <= 5.4.3 no fix
  15. A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp 5.4.3. This issue affects the function CSMImporter::InternReadFile of the file code/AssetLib/CSM/C
    High · 8.8 CVE-2025-2592 <= 5.4.3 no fix
  16. A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp 5.4.3. This issue affects the function Assimp::BaseImporter::ConvertToUTF8 of the file BaseImporte
    Critical · 9.8 CVE-2025-2152 <= 5.4.3 no fix
  17. A vulnerability classified as critical was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function Assimp::GetNextLine in the library ParsingUtils.h of the component F
    High · 8.8 CVE-2025-2151 <= 5.4.3 no fix
  18. An issue in assimp v.5.4.3 allows a local attacker to execute arbitrary code via the CallbackToLogRedirector function within the Assimp library.
    High · 7.8 CVE-2024-48423 all versions no fix

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