CVE-2025-53010 Overview
CVE-2025-53010 affects MaterialX, an open standard for exchanging material and look-development content across applications and renderers. In version 1.39.2, the MaterialXCore parser accesses a potentially null pointer when processing shader nodes inside an MTLX file. A maliciously crafted MTLX file triggers the dereference and crashes the host application. The Academy Software Foundation fixed the issue in version 1.39.3. The flaw is tracked under [CWE-476] Null Pointer Dereference and requires local file access to exploit.
Critical Impact
An attacker who can deliver a crafted MTLX file to a target can crash programs that embed MaterialX, including pipelines that interface with OpenEXR-based workflows.
Affected Products
- Linux Foundation MaterialX 1.39.2
- Applications and renderers embedding MaterialXCore shader node parsing
- Build pipelines processing untrusted .mtlx files alongside OpenEXR assets
Discovery Timeline
- 2025-08-01 - CVE-2025-53010 published to NVD
- 2025-08-20 - Last updated in NVD database
Technical Details for CVE-2025-53010
Vulnerability Analysis
The vulnerability resides in MaterialX 1.39.2 within the shader node parsing logic of MaterialXCore. When the parser reads node definitions from an MTLX document, it dereferences a pointer without first verifying that the referenced object exists. A specifically constructed MTLX file can produce parser state where this pointer is null, causing an immediate process crash. The crash impacts any application that loads MTLX content through the affected library, including digital content creation tools and offline renderers that pair MaterialX with OpenEXR. The defect is classified as a Null Pointer Dereference and produces a denial-of-service condition rather than memory disclosure or code execution. The fix in commit e13344b adds the missing validation before the dereference path is taken.
Root Cause
The root cause is missing null-pointer validation during shader node traversal inside MaterialXCore. The parser assumes that every referenced node object resolves successfully, but malformed input can leave that reference unset. Once the code reads from the null pointer, the host process terminates.
Attack Vector
Exploitation requires the victim to open or process a crafted MTLX file with an application that links MaterialX 1.39.2. The attack vector is local: the attacker must deliver the malicious file through email, asset packs, shared project directories, or rendering pipelines. No authentication or user privilege escalation is required by the parser itself. The outcome is a reliable application crash.
No verified proof-of-concept code is reproduced here. A public PoC is available in the ShielderSec CVE-2025-53010 repository for defenders building test cases.
Detection Methods for CVE-2025-53010
Indicators of Compromise
- Unexpected crashes of renderers or digital content creation tools immediately after loading an .mtlx asset
- Application crash logs referencing MaterialXCore shader node parsing functions
- Inbound .mtlx files from untrusted sources staged in shared asset directories
Detection Strategies
- Inventory installed MaterialX versions across workstations and build agents, flagging any instance of 1.39.2 or earlier
- Inspect MTLX files for malformed or unresolved shader node references prior to ingestion in automated pipelines
- Correlate process termination events with recent file open operations targeting .mtlx extensions
Monitoring Recommendations
- Forward crash dumps and Windows Error Reporting or Linux core dump events from artist workstations to a central log store for review
- Alert on repeated crashes of the same rendering or DCC process tied to MaterialX module loads
- Track file provenance for MTLX assets entering rendering farms and asset management systems
How to Mitigate CVE-2025-53010
Immediate Actions Required
- Upgrade MaterialX to version 1.39.3 or later on every workstation, render node, and build agent
- Audit applications that statically link or bundle MaterialX and rebuild them against the patched release
- Restrict ingestion of MTLX files from external or untrusted contributors until upgrades are complete
Patch Information
The Academy Software Foundation released the fix in MaterialX 1.39.3. The corrective change is published in commit e13344b and documented in the GitHub Security Advisory GHSA-3jhf-gxhr-q4cx. Operators should pin dependencies to 1.39.3 or later and rebuild downstream tools.
Workarounds
- Block or quarantine MTLX files received from untrusted sources at the email gateway and file share level
- Validate MTLX inputs in a sandboxed worker so a crash does not terminate the primary application
- Disable automatic MTLX preview features in DCC tools until the patched library is deployed
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
