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Assimp CVE-2025-70070

| EUVDEUVD-2025-209620 MEDIUM
NULL Pointer Dereference (CWE-476)
2026-05-04 mitre
Denial Of Service Null Pointer Dereference N A
6.5
CVSS 3.1 · Vendor: mitre
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Severity by source

Vendor (mitre) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SUSE
MEDIUM
qualitative
Red Hat
6.5 MEDIUM
qualitative

Primary rating from Vendor (mitre).

CVSS VectorVendor: mitre

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

5
Analysis Generated
May 04, 2026 - 17:15 vuln.today
CVSS changed
May 04, 2026 - 16:22 NVD
6.5 (MEDIUM)
EUVD ID Assigned
May 04, 2026 - 15:00 euvd
EUVD-2025-209620
Analysis Generated
May 04, 2026 - 15:00 vuln.today
CVE Published
May 04, 2026 - 00:00 nvd
MEDIUM 6.5

DescriptionCVE.org

An issue in Assimp v.6.0.2 allows a remote attacker to cause a denial of service via the FBXMeshGeometry.cpp, MeshGeometry::MeshGeometry()

AnalysisAI

Denial of service vulnerability in Assimp 6.0.2 via null pointer dereference in FBXMeshGeometry.cpp MeshGeometry constructor allows remote attackers to crash applications processing malicious FBX files. Requires user interaction (opening/processing a crafted file) but affects any application using the vulnerable library version. Publicly available exploit code exists; CVSS 6.5 reflects network attack vector with user interaction requirement.

Technical ContextAI

Assimp (Open Asset Import Library) is a 3D model import library supporting multiple formats including FBX. The vulnerability exists in the FBX geometry processing code (FBXMeshGeometry.cpp), specifically in the MeshGeometry constructor which handles mesh data parsing. A null pointer dereference (CWE-476) occurs during FBX mesh geometry initialization, indicating the code fails to validate or check for null pointers before dereferencing them. This typically happens when parsing specially crafted FBX files with malformed mesh geometry data that causes expected structures to be absent or improperly initialized.

RemediationAI

Upgrade Assimp to a patched version newer than 6.0.2 if available from the project repository (http://assimp.com). As no specific patched version number is confirmed in provided data, verify the latest stable release on the official Assimp GitHub or website. Until patching is possible, implement file validation: restrict FBX file processing to known-good files from trusted sources, disable automatic FBX loading in user-facing applications, and run Assimp-dependent services in sandboxed environments with resource limits (memory caps, process timeout) to contain denial of service impact. Server-side applications should implement upload validation to reject suspicious FBX files before parsing. Note: these workarounds do not eliminate the vulnerability but reduce exploitability in production environments.

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Vendor StatusVendor

SUSE

Severity: Medium
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP7 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP7 Fixed
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Fixed

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CVE-2025-70070 vulnerability details – vuln.today
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