CVE-2025-53009: AcademySoftwareFoundation MaterialX · Stack-based Buffer Overflow
Affects AcademySoftwareFoundation MaterialXSource CVE Database V5
Public exploit available · CVSS 5.5 Medium · fixed in 1.39.3 : patch AcademySoftwareFoundation MaterialX as a priority.
Data as of 27 Oct 2026, 05:11 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 51% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.39.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:PExploitation evidence
Disclosed: evidence found.
CVE published 1 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
AI-suggested
European organizations should immediately audit their use of MaterialX and identify any instances running versions 1.39.2 or earlier. Upgrading to version 1.39.3 or later is the primary and most effective mitigation. For environments where immediate upgrade is not feasible, organizations should implement strict input validation and sanitization for all MTLX files, especially those received from external or untrusted sources. Employ sandboxing or process isolation for applications parsing MTLX files to contain potential crashes and prevent disruption of critical systems. Monitoring application logs for crashes related to MTLX parsing can help detect attempted exploitation. Additionally, organizations should review their supply chain and collaboration workflows to ensure that all partners are aware of the vulnerability and have applied the necessary patches. Incorporating static and dynamic analysis tools to detect malformed or malicious MTLX files before processing can further reduce risk. Finally, maintaining an incident response plan that includes handling denial of service scenarios related to rendering pipelines will improve resilience.
Description
MaterialX is an open standard for the exchange of rich material and look-development content across applications and renderers. In versions 1.39.2 and below, when parsing an MTLX file with multiple nested nodegraph implementations, the MaterialX XML parsing logic can potentially crash due to stack exhaustion. An attacker could intentionally crash a target program that uses OpenEXR by sending a malicious MTLX file. This is fixed in version 1.39.3.
References
- github.com/AcademySoftwareFoundation/MaterialX/security/advisories/GHSA-wx6g-fm6f-w822 (opens in a new tab)
- github.com/AcademySoftwareFoundation/MaterialX/issues/2504 (opens in a new tab)
- github.com/AcademySoftwareFoundation/MaterialX/pull/2505 (opens in a new tab)
- github.com/AcademySoftwareFoundation/MaterialX/releases/tag/v1.39.3 (opens in a new tab)
- github.com/ShielderSec/poc/tree/main/CVE-2025-53009 (opens in a new tab)