Assimp
CVE-2025-5169
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, buffer size validation
MITRE ATT&CK
2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 4.8 (MEDIUM). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.11%. |
| Exploit ScenarioDerived | A local attacker with access to the system could corrupt memory to execute arbitrary code or crash the application. |
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Alert meAnalysisAIv1 – Mar 28, 2026
A vulnerability classified as problematic has been found in Open Asset Import Library Assimp 5.4.3. Rated medium severity (CVSS 4.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use memory-safe languages or bounds-checking. Enable ASLR, DEP/NX, stack canaries. Use safe string functions.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in pypi
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Buffer Overflow (CWE-119), which allows attackers to corrupt memory to execute arbitrary code or crash the application. A vulnerability classified as problematic has been found in Open Asset Import Library Assimp 5.4.3. This affects the function MDLImporter::InternReadFile_3DGS_MDL345 of the file assimp/code/AssetLib/MDL/MDLLoader.cpp. The manipulation leads to out-of-bounds read. Local access is required to approach this attack. 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 products include: Assimp.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
A vulnerability classified as problematic has been found in Open Asset Import Library Assimp 5.4.3. This affects the function MDLImporter::InternReadFile_3DGS_MDL345 of the file assimp/code/AssetLib/MDL/MDLLoader.cpp. The manipulation leads to out-of-bounds read. Local access is required to approach this attack. 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.
Executive ViewAI
Organizations using A vulnerability classified as problematic should be aware of moderate risk from CVE-2025-5169, a buffer overflow vulnerability rated CVSS 4.8. Exploitation could cause memory corruption or application crashes. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.
Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
Affected Products (CPE)CVE.org
An issue in assimp v.5.4.3 allows a local attacker to execute arbitrary code via the CallbackToLogRedirector function wi
Open Asset Import Library (assimp) commit 3c253ca was discovered to contain a segmentation violation via the component A
A heap-buffer-overflow vulnerability was discovered in the SkipSpacesAndLineEnd function in Assimp v5.4.3. Rated medium
A segmentation fault (SEGV) was detected in the SortByPTypeProcess::Execute function in the Assimp library during fuzz t
A segmentation fault (SEGV) was detected in the Assimp::SplitLargeMeshesProcess_Triangle::UpdateNode function within the
A heap-buffer-overflow vulnerability has been identified in the OpenDDLParser::parseStructure function within the Assimp
A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. Rated medium severity (CV
A vulnerability was found in Open Asset Import Library Assimp 5.4.3 and classified as problematic.h of the component CSM
A vulnerability classified as critical has been found in Open Asset Import Library Assimp 5.4.3. Rated medium severity (
A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp 5.4.3.cpp. Rated m
A vulnerability classified as critical was found in Open Asset Import Library Assimp 5.4.3. Rated medium severity (CVSS
A vulnerability classified as critical has been found in Open Asset Import Library Assimp 5.4.3. Rated medium severity (
GitHub PoC
Exploit-DB